Rhestr gwyfynod a gloÿnnod byw
(Ailgyfeiriwyd o Rhestr gwyfynod a gloynnod byw)
Pryfed sy'n perthyn i'r urdd Lepidoptera ydy gloÿnnod byw a gwyfynod. Dyma restr o rai ohonyn nhw yn nhrefn yr wyddor; mae gan dros 1,050 ohonyn nhw enwau Cymraeg; dyma nhw:[1][2]
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| Enw Safonol Cymraeg | Enw Safonol Saesneg | Tacson Gwyddonol |
|---|---|---|
| gwyfyn arennau disglair | Pale Shining Brown |
Polia bombycina |
| gwyfyn arian y drain | Chinese Character | Cilix glaucata |
| gwyfyn bwâu arian | Silvery Arches | Polia hepatica |
| gwyfyn bwâu Kew | Kew Arches | Brithys crini |
| gwyfyn bwâu llwyd | Grey Arches | Polia nebulosa |
| gwyfyn euradain | Goldwing | Synthymia fixa |
| gwyfyn gwythïen goch | Blood-vein | Timandra comae |
| gwyfyn nod gwelw | Pale Stigma | Mesogona acetosellae |
| gwyfyn nytmeg | Nutmeg | Discestra trifolii |
| gwyfyn sythlin du | Saxon | Hyppa rectilinea |
| gwyfyn teires | Treble-bar | Aplocera plagiata |
| gwyfyn teires borffor | Purple Treble-bar | Aplocera praeformata |
| gwyfyn teires leiaf | Lesser Treble-bar | Aplocera efformata |
| gwyfyn teires y Gogledd | Manchester Treble-bar | Carsia sororiata |
| adain ariannaidd | Grey Shoulder-knot | Lithophane ornitopus |
| adain brin | Nonconformist | Lithophane lambda |
| adain ddeifiog | Scorched Wing | Plagodis dolabraria |
| adain ddu | Chimney Sweep | Odezia atrata |
| adain Gymreig | Conformist | Lithophane furcifera |
| adain hirgron | Horse Chestnut | Pachycnemia hippocastanaria |
| adain lwydfelen | Tawny Pinion | Lithophane semibrunnea |
| adain welw | Pale Pinion | Lithophane hepatica |
| aren fawr | Great Kidney | Synedoida grandirena |
| arennog deugylch | Heart Moth | Dicycla oo |
| arennog melyn y bedw | Angle-striped Sallow | Enargia paleacea |
| arennog oren brith | Suspected | Parastichtis suspecta |
| arennog tywyll | Dingy Shears | Parastichtis ypsillon |
| arennog y poplys | Olive | Ipimorpha subtusa |
| arennog yr helyg | Double kidney | Ipimorpha retusa |
| argws brown | Brown Argus | Aricia agestis |
| argws brown y gogledd | Northern Brown Argus | Aricia artaxerxes artaxerxes |
| bachadain brin | Scarce Hook-tip | Sabra harpagula |
| bachadain dywyll | Dusky Hook-tip | Drepana curvatula |
| bachadain fylchog | Scalloped Hook-tip | Falcaria lacertinaria |
| bachadain raeanog | Pebble Hook-tip | Drepana falcataria falcataria |
| bachadain y cen | Beautiful Hook-tip | Laspeyria flexula |
| bachadain y derw | Oak Hook-tip | Watsonalla binaria |
| bachadain y ffawydd | Barred Hook-tip | Watsonalla cultraria |
| Berber (gwyfyn) | Berber | Pseudenargia ulicis |
| bidog blodiog | Miller | Acronicta leporina |
| bidog ffa'r gors | Light Knot Grass | Acronicta menyanthidis |
| bidog helygen Fair | Sweet Gale Moth | Acronicta euphorbiae |
| bidog llwyd | Grey Dagger | Acronicta psi |
| bidog mawr | Large Dagger | Acronicta cuspis |
| bidog prin | Scarce Dagger | Acronicta auricoma |
| bidog tywyll | Dark Dagger | Acronicta tridens |
| bidog y cyrs | Reed Dagger | Simyra albovenosa |
| bidog y drain | Marsh Dagger | Acronicta strigosa |
| bidog y gwernos | Alder Moth | Acronicta alni |
| bidog y masarn | Sycamore | Acronicta aceris |
| bidog y poplys | Poplar Grey | Acronicta megacephala |
| bidog y tafol | Knot Grass | Acronicta rumicis |
| bidog yr yswydd | Coronet | Craniophora ligustri |
| blaen brigyn | Buff-tip | Phalera bucephala |
| blaen brown | Chocolate-tip | Clostera curtula |
| blaen brown bach | Small Chocolate-tip | Clostera pigra |
| blaen brown prin | Scarce Chocolate-tip | Clostera anachoreta |
| brawd llwyd | Brother | Raphia frater |
| brith bach gwelw | Pale Mottled Willow | Paradrina clavipalpis |
| brith bach tramor | Small Mottled willow | Spodoptera exigua |
| brith bach tywyll | Dark Mottled Willow | Spodoptera cilium |
| brith cotwm Affrica | African Cotton Leafworm | Spodoptera littoralis |
| brith cotwm Asia | Asian Cotton Leafworm | Spodoptera litura |
| brith golau | Light Magpie | Abraxas pantaria |
| brith llosg | Scorched Carpet | Ligdia adustata |
| brith tri smotyn | Dorset Cream Wave | Stegania trimaculata |
| brith y cyrens | Magpie | Abraxas grossulariata |
| brith y llwyf | Clouded Magpie | Abraxas sylvata |
| brith ymyl gymylog | Clouded Border | Lomaspilis marginata |
| brith yr inclys | Southern Army Worm | Spodoptera eridania |
| britheg Affrodite | Aphrodite Fritillary | Issoria aphrodite |
| britheg arian | Silver-washed Fritillary | Argynnis paphia |
| britheg berlog | Pearl-bordered Fritillary | Boloria euphrosyne |
| britheg berlog fach | Small Pearl-bordered Fritillary | Boloria selene |
| britheg borffor | Weaver's Fritillary | Boloria dia |
| britheg frown | High Brown Fritillary | Argynnis adippe |
| britheg Glanville | Glanville Fritillary | Melitaea cinxia |
| britheg Niobe | Niobe Fritillary | Argynnis niobe |
| britheg Sbaen | Queen of Spain Fritillary | Issoria lathonia |
| britheg smotiog | Spotted Fritillary | Melitaea didyma |
| britheg werdd | Dark Green Fritillary | Argynnis aglaja |
| britheg y Canoldir | Mediterranean Fritillary | Argynnis pandora |
| britheg y gors | Marsh Fritillary | Euphydryas aurinia aurinia |
| britheg y waun | Heath Fritillary | Melitaea athalia |
| brithliw Sbaen | Spanish Festoon | Zerynthia rumina |
| brithliw'r de | Southern Festoon | Zerynthia polyxena |
| brithribin brown | Brown Hairstreak | Thecla betulae |
| brithribin du | Black Hairstreak | Satyrium pruni |
| brithribin gwyrdd | Green Hairstreak | Callophrys rubi |
| brithribin llechlwyd | Slate Flash | Rapala schistacea |
| brithribin porffor | Purple Hairstreak | Neozephyrus quercus |
| brithribin wen | White-letter Hairstreak | Satyrium w-album |
| brithwyfyn y derw | Oak Nycteoline | Nycteola revayana |
| brithwyfyn yr helyg | Sallow Nycteoline | Nycteola degenerana |
| brithyn ariannaidd | Union Rustic | Eremobina pabulatricula |
| brithyn cymylog | Clouded Brindle | Apamea epomidion |
| brithyn cymylog bach | Small Clouded Brindle | Apamea unaminis |
| brithyn dwy labed | Double lobed | Apamea ophiogramma |
| brithyn godreog | Clouded-bordered Brindle | Apamea crenata |
| brithyn golau | Light Arches | Apamea lithoxylaea |
| brithyn gwargwlwm | Rustic Shoulder-knot | Apamea sordens |
| brithyn llwydolau | Dusky Brocade | Apamea remissa |
| brithyn llwytgoch | Reddish Light Arches | Apamea sublustris |
| brithyn main | Slender Brindle | Apamea scolopacina |
| brithyn ocraidd | Large Nutmeg | Apamea anceps |
| brithyn prin | Scarce Brindle | Apamea lateritia |
| brithyn prudd | Confused | Apamea furva |
| brithyn Shetland | Exile | Apamea zeta is. rh. Marmorata |
| brithyn tywyll | Dark Arches | Apamea monoglypha |
| brithyn y gogledd | Northern Arches | Apamea zeta is. rh. Assimilis |
| brithyn y morfa | Crescent Striped | Apamea oblonga |
| brychan arian | Silver-ground Carpet | Xanthorhoe montanata |
| brychan Arran | Arran Carpet | Chloroclysta concinnata |
| brychan Breckland | Grey Carpet | Lithostege griseata |
| brychan caerog | Fortified Carpet | Scotopteryx moeniata |
| brychan cleisiog | Common Marbled Carpet | Chloroclysta truncata |
| brychan cleisiog tywyll | Dark Marbled Carpet | Chloroclysta citrata citrata |
| brychan coch | Red Carpet | Xanthorhoe decoloraria |
| brychan cochddu | Chestnut-coloured Carpet | Thera cognata |
| brychan cochwyrdd | Red-green Carpet | Chloroclysta siterata |
| brychan cyffredin | Common Carpet | Epirrhoe alternata |
| brychan Cymbria | Cumbrian Umber | Horisme aquata |
| brychan cyrens | Spinach | Eulithis mellinata |
| brychan deusmotiog coch | Red Twin-spot Carpet | Xanthorhoe spadicearia |
| brychan deusmotiog mawr | Large Twin-spot Carpet | Xanthorhoe quadrifasciata |
| brychan deusmotiog tywyll | Dark-barred Twin-spot Carpet | Xanthorhoe ferrugata |
| brychan du a gwyn | Small Argent & Sable | Epirrhoe tristata |
| brychan Dyfnaint | Devon Carpet | Lampropteryx otregiata |
| brychan eurgylchog | Yellow-ringed Carpet | Entephria flavicinctata |
| brychan fflamgoch | Flame Carpet | Xanthorhoe designata |
| brychan gaeaf y gogledd | Northern Winter Moth | Operophtera fagata |
| brychan gwar rhesog | Shoulder Stripe | Anticlea badiata |
| brychan gwyrdd | Green Carpet | Colostygia pectinataria |
| brychan gwyrdd yr hydref | Autumn Green Carpet | Chloroclysta miata |
| brychan hardd | Beautiful Carpet | Mesoleuca albicillata |
| brychan hardd y calch | Pretty Chalk Carpet | Melanthia procellata |
| brychan hydrefol | Autumnal Moth | Epirrita autumnata |
| brychan hydrefol bach | Small Autumnal Moth | Epirrita filigrammaria |
| brychan lletraws | Oblique Carpet | Orthonama vittata |
| brychan llinellog | Many-lined | Costaconvexa polygrammata |
| brychan llwyd dau smotyn | Striped Twin-spot | Nebula salicata |
| brychan llwyd y mynydd | Grey Mountain Carpet | Entephria caesiata |
| brychan llwyd y pinwydd | Grey Pine Carpet | Thera obeliscata |
| brychan llwydfrith | Mottled Grey | Colostygia multistrigaria |
| brychan llwydwyrdd | Beech-green Carpet | Colostygia olivata |
| brychan Madeira | Traveller | Costaconvexa centrostrigaria |
| brychan mantellog | Royal Mantle | Catarhoe cuculata |
| brychan mantellog | Cloaked Carpet | Euphyia biangulata |
| brychan mantellog bach | Sharp-angled Carpet | Euphyia unangulata |
| brychan meinresog | Slender-striped Rufous | Coenocalpe lapidata |
| brychan osglog | Scarce Tissue | Rheumaptera cervinalis |
| brychan pennau saethau | Argent & Sable | Rheumaptera hastata hastata |
| brychan rhesen ddulas | Purple Bar | Cosmorhoe ocellata |
| brychan rhesen wen | White-banded Carpet | Spargania luctuata |
| brychan rhesi bylchog | Broken-barred Carpet | Electrophaes corylata |
| brychan rhubanaidd | Streamer | Anticlea derivata |
| brychan rhudd | Ruddy Carpet | Catarhoe rubidata |
| brychan rhwydog | Netted Carpet | Eustroma reticulatum |
| brychan rhydlyd | Blue-bordered Carpet | Plemyria rubiginata rubiginata |
| brychan sgolpiog | Scallop shell | Rheumaptera undulata |
| brychan sgolpiog brown | Brown Scallop | Philereme vetulata |
| brychan sgolpiog tywyll | Dark Umber | Philereme transversata |
| brychan Tachwedd | November Moth | Epirrita dilutata |
| brychan Tachwedd gwelw | Pale November Moth | Epirrita christyi |
| brychan tonnog bach | Small Waved Umber | Horisme vitalbata |
| brychan tywyll | Dusky Carpet | Tephronia sepiaria |
| brychan y banadl | Spanish Carpet | Scotopteryx peribolata |
| brychan y calch | Chalk Carpet | Scotopteryx bipunctaria |
| brychan y coed | Wood Carpet | Epirrhoe rivata |
| brychan y cypreswydd | Cypress Carpet | Thera cupressata |
| brychan y dringhedydd | Fern | Horisme tersata |
| brychan y dwr | Water Carpet | Lampropteryx suffumata |
| brychan y ffromlys | Balsam Carpet | Xanthorhoe biriviata |
| brychan y friwydd | Galium Carpet | Epirrhoe galiata |
| brychan y gaeaf | Winter Moth | Operophtera brumata |
| brychan y llus | Northern Spinach | Eulithis populata |
| brychan y meryw | Juniper Carpet | Thera juniperata juniperata |
| brychan y pinwydd | Pine Carpet | Thera firmata |
| brychan y rhafnwydd | Tissue | Triphosa dubitata |
| brychan y sbriws | Spruce Carpet | Thera britannica |
| brychan y wermod | Dark Spinach | Pelurga comitata |
| brychan yr ardd | Garden Carpet | Xanthorhoe fluctuata fluctuata |
| brychan yr eurddrain | Barberry Carpet | Pareulype berberata |
| brychan yr hocys | Mallow | Larentia clavaria |
| bwâu duon bach | Small Black Arches | Meganola strigula |
| bwâu duon Jersey | Jersey black arches | Nola chlamitulalis |
| bwâu duon lleiaf | Least Black Arches | Nola confusalis |
| bwâu duon mantellog | Short-cloaked Moth | Nola cucullatella |
| bwâu duon y meillion | Scarce Black Arches | Nola aerugula |
| bwâu duon y mwyar | Kent Black Arches | Meganola albula |
| bwâu gwyrdd | Green Arches | Anaplectoides prasina |
| bwâu llwydfelyn | Buff Arches | Habrosyne pyritoides |
| bwâu mawr | Great Brocade | Eurois occulta |
| bwrned chwe smotyn | Six-spot Burnet | Zygaena filipendulae |
| bwrned main yr Alban | Slender Scotch Burnet | Zygaena loti |
| bwrned pum smotyn | Five-spot Burnet | Zygaena trifolii |
| bwrned pum smotyn ymyl gul | Narrow-bordered Five-spot Burnet | Zygaena lonicerae |
| bwrned tryloyw Llyn | Transparent Burnet | Zygaena purpuralis segontii |
| bwrned tryloyw'r Alban | Transparent Burnet | caledoniensis |
| bwrned y Fforest Newydd | New Forest Burnet | Zygaena viciae |
| bwrned yr Alban | Scotch Burnet | Zygaena exulans |
| bychan nod aren | Kidney-spotted Minor | Lacinipolia renigera |
| carpiog Awst | August Thorn | Ennomos quercinaria |
| carpiog cynnar | Early Thorn | Selenia dentaria |
| carpiog gwar melyn | Canary-shouldered Thorn | Ennomos alniaria |
| carpiog lloerennog | Lunar Thorn | Selenia lunularia |
| carpiog llwydaidd | Clouded August Thorn | Ennomos quercaria |
| carpiog mawr | Large Thorn | Ennomos autumnaria |
| carpiog Medi | September Thorn | Ennomos erosaria |
| carpiog pluog | Feathered Thorn | Colotois pennaria |
| carpiog porffor | Purple Thorn | Selenia tetralunaria |
| carpiog tywyll | Dusky Thorn | Ennomos fuscantaria |
| carpiog y cyll | Scalloped Hazel | Odontopera bidentata |
| carpiog y derw | Scalloped Oak | Crocallis elinguaria |
| carpiog y gwyddfid | Lilac Beauty | Apeira syringaria |
| castan goch | Red Chestnut | Cerastis rubricosa |
| castan grech | Flounced Chestnut | Agrochola helvola |
| castan leiniog | Beaded Chestnut | Agrochola lychnidis |
| castan smotyn brown | Brown-spot Pinion | Agrochola litura |
| cathan y gwernos | Alder Kitten | Furcula bicuspis |
| cathan y poplys | Poplar Kitten | Furcula bifida |
| cathan yr helyg | Sallow Kitten | Furcula furcula |
| cathwyfyn | Puss Moth | Cerura vinula |
| ceinder Brixton | Brixton Beauty | Acontia nitidula |
| cennog prin | Scarce Merveille du Jour | Moma alpium |
| cenwyfyn cleisiog | Marbled Beauty | Cryphia domestica |
| cenwyfyn gwyrdd cleisiog | Marbled Green | Cryphia muralis muralis |
| cenwyfyn y coed | Tree-lichen Beauty | Cryphia algae |
| chwimwyfyn aur | Gold Swift | Hepialus hecta |
| chwimwyfyn cyffredin | Common Swift | Hepialus lupulinus |
| chwimwyfyn mapadeiniog | Map-winged Swift | Hepialus fusconebulosa |
| chwimwyfyn oren | Orange Swift | Hepialus sylvina |
| chwimwyfyn rhithiol | Ghost Moth | Hepialus humuli |
| cilgant brych | Green-brindled Crescent | Allophyes oxyacanthae |
| clai chwe rhesen | Six-striped Rustic | Xestia sexstrigata |
| clai cochddu | Barred Chestnut | Diarsia dahlii |
| clai deusgwar | Double-square Spot | Xestia triangulum |
| clai engreilyd | Ingrailed Clay | Diarsia mendica mendica |
| clai lloerol | Setaceous Hebrew Character | Xestia c-nigrum |
| clai mannog | Dotted Clay | Xestia baja |
| clai plaen | Plain Clay | Eugnorisma depuncta |
| clai porffor | Purple Clay | Diarsia brunnea |
| clai smotyn | Square-spotted Rustic | Xestia rhomboidea |
| clai smotyn melyn | Square-spot Rustic | Xestia xanthographa |
| clai tri smotyn | Triple-spotted Clay | Xestia ditrapezium |
| clai'r mynydd | Northern Dart | Xestia alpicola |
| clai'r rhos | Heath Rustic | Xestia agathina |
| clai'r waun | Neglected Rustic | Xestia castanea |
| clais bach | Small Marbled | Eublemma parva |
| clais bachyn arian | Silver Hook | Deltote uncula |
| clais godreog | Marbled White Spot | Protodeltote pygarga |
| clais gwelw | Scarce Marbled | Eublemma minutata |
| clais pert | Pretty Marbled | Deltote deceptoria |
| clais porffor | Purple Marbled | Eublemma ostrina |
| clais rhesi arian | Silver Barred | Deltote bankiana |
| cleddwyfyn coch | Red Sword-grass | Xylena vetusta |
| cleddwyfyn cyffredin | Sword-grass | Xylena exsoleta |
| cliradain chwe rhesen | Six-belted Clearwing | Bembecia ichneumoniformis |
| cliradain clustog Fair | Thrift Clearwing | Synansphecia muscaeformis |
| cliradain danllyd | Fiery Clearwing | Pyropteron chrysidiformis |
| cliradain dinfelen | Orange-tailed Clearwing | Synanthedon andrenaeformis |
| cliradain dywyll | Dusky Clearwing | Paranthrene tabaniformis |
| cliradain felyngoes | Yellow-legged Clearwing | Synanthedon vespiformis |
| cliradain flaengoch | Red-tipped Clearwing | Synanthedon formicaeformis |
| cliradain Gymreig | Welsh Clearwing | Synanthedon scoliaeformis |
| cliradain rhesen wen | White-barred Clearwing | Synanthedon spheciformis |
| cliradain wregysgoch | Red-belted Clearwing | Synanthedon myopaeformis |
| cliradain wregysgoch fawr | Large Red-belted Clearwing | Synanthedon culiciformis |
| cliradain y cwrens | Currant Clearwing | Synanthedon tipuliformis |
| cliradain yr helyg | Sallow Clearwing | Synanthedon flaviventris |
| clust bluog | Feathered Ear | Pachetra sagittigera |
| clustwyfyn cilgantog | Crescent | Helotropha leucostigma |
| clustwyfyn Gwyddelig | Crinan Ear | Amphipoea crinanensis |
| clustwyfyn llygeidiog | Ear Moth | Amphipoea oculea |
| clustwyfyn mawr | Large Ear | Amphipoea lucens |
| clustwyfyn oren | Frosted Orange | Gortyna flavago |
| clustwyfyn y morfa | Saltern Ear | Amphipoea fucosa |
| clustwyfyn yr aber | Fisher's Estuarine Moth | Gortyna borelii |
| cochyn rhesog | Barred Red | Hylaea fasciaria |
| coediwr | Forester | Adscita statices |
| coediwr bach | Cistus Forester | Adscita geryon |
| coediwr prin | Scarce Forester | Jordanita globulariae |
| coegfritheg | Duke of Burgundy | Hamearis lucina |
| coeswyntyll | Fan-foot | Zanclognatha tarsipennalis |
| coeswyntyll bluog | Plumed Fan-foot | Pechipogo plumigeralis |
| coeswyntyll cilgant golau | Olive Crescent | Trisateles emortualis |
| coeswyntyll dywyll | Dusky Fan-foot | Zanclognatha zelleralis |
| coeswyntyll fach | Small Fan-foot | Herminia grisealis |
| coeswyntyll fannog | Dotted Fan-foot | Macrochilo cribrumalis |
| coeswyntyll felynddu | Clay Fan-foot | Paracolax tristalis |
| coeswyntyll gyffredin | Common Fan-foot | Pechipogo strigulata |
| coeswyntyll loerol | Jubilee Fan-foot | Zanclognatha lunalis |
| coeswyntyll y mieri | Shaded Fan-foot | Herminia tarsicrinalis |
| coler du | Blackneck | Lygephila pastinum |
| coler du prin | Scarce Blackneck | Lygephila craccae |
| coler du'r Dwyrain | Levant Blackneck | Tathorhyncus exsiccata |
| colon gwyn | White Colon | Sideridis albicolon |
| copor bach | Small Copper | Lycaena phlaeas |
| copor mawr | Large Copper | Lycaena dispar |
| copor porffor symudliw | Purple-shot Copper | Lycaena alciphron |
| copor prin | Scarce Copper | Lycaena virgaureae |
| copor pyglyd | Sooty Copper | Lycaena tityrus |
| copor ymyl borffor | Purple-edged Copper | Lycaena hippothoe |
| corrach amryliw | Rufous Minor | Oligia versicolor |
| corrach bychan | Least Minor | Photedes captiuncula |
| corrach cleisiog | Marbled Minor | Oligia strigilis |
| corrach gwridog | Rosy Minor | Mesoligia literosa |
| corrach mantellog | Cloaked Minor | Mesoligia furuncula |
| corrach rhesog | Middle-barred Minor | Oligia fasciuncula |
| corrach smotiog | Small Dotted Buff | Photedes minima |
| corrach tywyll | Tawny Marbled Minor | Oligia latruncula |
| cragen felen | Yellow Shell | Camptogramma bilineata |
| crwbach arian y bedw | Lesser Swallow Prominent | Pheosia gnoma |
| crwbach arian yr aethnen | Swallow Prominent | Pheosia tremula |
| crwbach cleisiog | Marbled Brown | Drymonia dodonaea |
| crwbach cleisiog tywyll | Dusky Marbled Brown | Gluphisia crenata |
| crwbach cribog | Coxcomb Prominent | Ptilodon capucina |
| crwbach cyrn cochion | Lunar Marbled Brown | Drymonia ruficorni |
| crwbach ffigwr wyth deg | Figure of Eight | Diloba caeruleocephala |
| crwbach gwelw | Pale Prominent | Pterostoma palpina |
| crwbach gwyn | White Prominent | Leucodonta bicoloria |
| crwbach haearn | Iron Prominent | Notodonta dromedarius |
| crwbach llygeidiog | Pebble Prominent | Notodonta ziczac |
| crwbach mawr | Great Prominent | Peridea anceps |
| crwbach melynddu | Tawny Prominent | Harpyia milhauseri |
| crwbach pluog | Plumed Prominent | Ptilophora plumigera |
| crwbach prin | Scarce Prominent | Odontosia carmelita |
| crwbach tri chrib | Three-humped Prominent | Notodonta tritophus |
| crwbach tywyll | Large Dark Prominent | Notodonta torva |
| crwbach y masarn | Maple Prominent | Ptilodon cucullina |
| crych bach gwyn | Small White Wave | Asthena albulata |
| crych bach melyn | Small Yellow Wave | Hydrelia flammeolaria |
| crych Blomer | Blomer's Rivulet | Discoloxia blomeri |
| crych Cymreig | Welsh Wave | Venusia cambrica |
| crych llwydfelyn | Dingy Shell | Euchoeca nebulata |
| crych tonnog | Waved Carpet | Hydrelia sylvata, Hydrelia |
| crynwr amrywiol | Clouded Drab | Orthosia incerta |
| crynwr bach | Small Quaker | Orthosia cruda |
| crynwr cyffredin | Common Quaker | Orthosia cerasi |
| crynwr dau smotyn | Twin-spotted Quaker | Orthosia munda |
| crynwr gothig | Hebrew Character | Orthosia gothica |
| crynwr gwridog | Blossom Underwing | Orthosia miniosa |
| crynwr llwyd | Lead-coloured Drab | Orthosia populeti |
| crynwr llychlyd | Powdered Quaker | Orthosia gracilis |
| crynwr rhesog | Northern Drab | Orthosia opima |
| cwcwll bwaog | Sprawler | Asteroscopus sphinx |
| cwcwll cymylog | Rannoch Sprawler | Brachionycha nubeculosa |
| cwcwll Fflorida | Fawn Sallow | Copipanolis styracis |
| cwcwll gwrnerth y cŵn | False Water Betony | Shargacucullia prenanthis |
| cwcwll gwyrdd ariannaidd | Green Silver-spangled Shark | Cucullia argentea |
| cwcwll melynaidd | Brindled Ochre | Dasypolia templi |
| cwcwll pluog | Feathered Brindle | Aporophyla australis |
| cwcwll prin | Scarce Wormwood | Cucullia artemisiae |
| cwcwll rhesog | Striped Lychnis | Shargacucullia lychnitis |
| cwcwll y brigwlydd | Star-wort | Cucullia asteris |
| cwcwll y camri | Chamomile Shark | Cucullia chamomillae |
| cwcwll y gwrnerth | Water Betony | Shargacucullia scophulariae |
| cwcwll y letys | Lettuce Shark | Cucullia lactucae |
| cwcwll y Maori | Maori | Graphania dives |
| cwcwll y mochysgall | Shark | Cucullia umbratica |
| cwcwll y pannog | Mullein | Shargacucullia verbasci |
| cwcwll y wermod | Wormwood | Cucullia absinthii |
| cwcwll yr edafeddog | Cudweed | Cucullia gnaphalii |
| cwcwll yr eurwialen | Golden-rod Brindle | Lithomoia solidaginis |
| cwlwm cariad | True Lover's Knot | Lycophotia porphyrea |
| cwmwl arian | Silver Cloud | Egira conspicullaris |
| cwmwl gwarwelw | Pale-shouldered Cloud | Actinotia hyperici |
| cwmwl porffor | Purple Cloud | Actinotia polyodon |
| cwplws | Chevron | Eulithis testata |
| dad-ddeiliwr | Mottled Umber | Erannis defoliaria |
| dart Archer | Archer's Dart | Agrotis vestigialis |
| dart calon a phastwn | Heart & Club | Agrotis clavis |
| dart calon a saeth | Heart & Dart | Agrotis exclamationis |
| dart cilgantog | Crescent Dart | Agrotis trux |
| dart deunod | Double Dart | Graphiphora augur |
| dart Eversmann | Eversmann's Rustic | Actebia fennica |
| dart gothig | Gothic Dart | Feltia subgothica |
| dart Gregson | Gregson's Dart | Agrotis spinifera |
| dart gwarfelyn | Tawny Shoulder | Feltia subterranea |
| dart gwenolaidd | Shuttle-shaped Dart | Agrotis puta |
| dart gwynresog | White-line Dart | Euxoa tritici |
| dart gwynresog bach | Small White-line Dart | Euxoa crypta |
| dart llwydwyrdd | Portland Moth | Actebia praecox |
| dart mannog | Dotted Rustic | Rhyacia simulans |
| dart mawr | Great Dart | Agrotis crassa |
| dart pluog | Light Feathered Rustic | Agrotis cinerea |
| dart poethfel | Flame | Axylia putris |
| dart praff | Stout Dart | Spaelotis ravida |
| dart smotiau sgwar | Square-spot Dart | Euxoa obelisca |
| dart Spalding | Spalding's Dart | Agrotis herzogi |
| dart torch ddu | Black Collar | Ochropleura flammatra |
| dart tywyll | Dark Sword-grass | Agrotis ipsilon |
| dart Wood | Wood's dart | Agrotis graslini |
| dart y creigiau | Northern Rustic | Standfussiana lucernea |
| dart y de | Southern Rustic | Rhyacia lucipeta |
| dart y gerddi | Garden Dart | Euxoa nigricans |
| dart y twyni | Coast Dart | Euxoa cursoria |
| dart y tywod | Sand Dart | Agrotis ripae |
| dart yr erfin | Turnip Moth | Agrotis segetum |
| dolennwr llwydfelyn | Drab Looper | Minoa murinata |
| draenen fach | Little Thorn | Cepphis advenaria |
| du tonnog | Waved Black | Parascotia fuliginaria |
| efydd ymyl wen | Geranium Bronze | Cacyreus marshalli |
| emrallt bach y glaswellt | Small Grass Emerald | Chlorissa viridata |
| emrallt barf yr hen ŵr | Small Emerald | Hemiostola chrysoprasaria |
| emrallt blotiog | Blotched Emerald | Comibaena bajularia |
| emrallt cyffredin | Common Emerald | Hemithea aestivaria |
| emrallt Essex | Essex Emerald | Thetidia smaragdaria |
| emrallt gwelw | Light Emerald | Campaea margaritata |
| emrallt gwelw bach | Little Emerald | Jodis lactearia |
| emrallt mawr | Large Emerald | Geometra papilionaria |
| emrallt Sussex | Sussex Emerald | Thalera fimbrialis |
| emrallt y mieri | Blackberry Looper | Chlorochlamys chloroleucaria |
| emrallt yr eithin | Grass Emerald | Pseudoterpna pruinata |
| ermin gwyn | White Ermine | Spilosoma lubricipeda |
| ermin llwydfelyn | Buff Ermine | Spilosoma lutea |
| ermin meinweog | Muslin Moth | Diaphora mendica |
| ermin melyn | Clouded Buff | Diacrisia sannio |
| ermin y Caribî | Halysidota moeschleri | |
| ermin y gors | Water Ermine | Spilosoma urticae |
| esgynnwr Gorffennaf | July Highflyer | Hydriomena furcata |
| esgynnwr llwytgoch | Ruddy Highflyer | Hydriomena ruberata |
| esgynnwr Mai | May Highflyer | Hydriomena impluviata |
| Ethiop | Old Lady | Mormo maura |
| euryn galarus | Purple-bordered Gold | Idaea muricata |
| ffenics (Lepidoptera) | Phoenix | Eulithis prunata |
| ffenics bach | Small Phoenix | Ecliptopera silaceata |
| fflamysgwydd | Flame Shoulder | Ochropleura plecta |
| fflamysgwydd Radford | Radford's Flame Shoulder | Ochropleura leucogaster |
| ffug-bicwnen | Hornet Moth | Sesia apiformis |
| ffug-bicwnen dorchog | Lunar Hornet Moth | Sesia bembeciformis |
| gem Caint | Tunbridge Wells Gem | Chrysodeixis acuta |
| gem Cernyw | Scar Bank Gem | Ctenoplusia limbirena |
| gem deusmotiog | Double-spotted Spangle | Megalographa bimaculata |
| gem deusmotiog aur | Golden Twin-spot | Chrysodeixis chalcites |
| gem Dewick | Dewick's Plusia | Macdunnoughia confusa |
| gem euraidd | Golden Plusia | Polychrysia moneta |
| gem fforch arian | Silver Y | Autographa gamma |
| gem fforch arian brin | Scarce Silver Y | Syngrapha interrogationis |
| gem fforch arian Essex | Essex Y | Cornutiplusia circumflexa |
| gem fforch aur | Plain Golden Y | Autographa jota |
| gem fforch aur hardd | Beautiful Golden Y | Autographa pulchrina |
| gem fforch welw | Ni Moth | Trichoplusia ni |
| gem gwridog | Purple-shaded Gem | Euchalcia variablilis |
| gem pres gloyw | Burnished Brass | Diachrysia chrysitis |
| gem pres main | Slender Burnished Brass | Thysanoplusia orichalcea |
| gem pres prin | Scarce Burnished Brass | Diachrysia chryson |
| gem resog | Streaked Plusia | Trichoplusia vittata |
| gem serenaur | Gold Spangle | Autographa bractea |
| gem smotiau aur | Gold Spot | Plusia festucae |
| gem smotiau aur Lempke | Lempke's Gold Spot | Plusia putnami |
| gem soia | Soybean Looper | Pseudoplusia includens |
| gem Stephens | Stephen's Gem | Megalographa biloba |
| gem y mintys | Accent Gem | Ctenoplusia accentifera |
| geometrydd | Geometrician | Prodotis stolida |
| glain | Gem | Orthonama obstipata |
| glain y gogledd | Cumberland Gem | Eucarta amethystina |
| glesyn Adonis | Adonis Blue | Polyommatus bellargus |
| glesyn cyffredin | Common Blue | Polyommatus icarus |
| glesyn cynffon fer | Short-tailed Blue | Everes argiades |
| glesyn cynffon fer Lang | Lang's Short-tailed Blue | Leptotes pirithous |
| glesyn cynffon hir | Long-tailed Blue | Lampides boeticus |
| glesyn gwyrddlas | Turquoise Blue | Plebicula dorylas |
| glesyn masarin | Mazarine Blue | Cyaniris semiargus |
| glesyn mawr | Large Blue | Maculinea arion arion |
| glesyn ôl-adain werdd | Green-underside Blue | Glaucopsyche alexis |
| glesyn serennog | Silver-studded Blue | Plebejus argus |
| glesyn y celyn | Holly Blue | Celastrina argiolus |
| glesyn y sialc | Chalkhill Blue | Lysandra coridon |
| glo dau-ddotyn Apolo | Apollo | Parnassius apollo |
| glo dau-ddot yn Apolo bach | Small Apollo | Parnassius phoebus |
| glöyn Cleopatra | Cleopatra | Gonepteryx cleopatra |
| glöyn cynffon gwennol | Swallowtail | Papilio machaon britannicus |
| glöyn cynffon gwennol Ewrop | Continental Swallowtail | Papilio machaon gorganus |
| glöyn cynffon gwennol prin | Scarce Swallowtail | Papilio podalirius |
| glöyn cynffon gwennol rhesog | Tiger Swallowtail | Papilio glaucus |
| glöyn y llaethlys | Monarch | Danaus plexippus |
| godre golau | Bordered Beauty | Epione repandaria |
| godre tywyll | Dark Bordered Beauty | Epione vespertaria |
| gothig (Lepidoptera) | Gothic | Naenia typica |
| gothig hardd | Beautiful Gothic | Leucochlaena oditis |
| gwalchwyfyn bach yr helyglys | Small Elephant Hawk-moth | Deilephila porcellus |
| gwalchwyfyn gwenynaidd ymyl gul | Narrow-bordered Bee Hawk-moth | Hemaris tityus |
| gwalchwyfyn gwenynaidd ymyl lydan | Broad-bordered Bee Hawk-moth | Hemaris fuciformis |
| gwalchwyfyn gwledig | Rustic Sphinx | Manduca rustica |
| gwalchwyfyn gwregysog | Pink-spotted Hawk-moth | Agrius cingulata |
| gwalchwyfyn gwyrdd yr helyglys | Willowherb Hawk-moth | Proserinus proserpina |
| gwalchwyfyn hofran | Humming-bird Hawk-moth | Macroglossum stellatarum |
| gwalchwyfyn llinellog | White-lined Hawk-moth | Hyles lineata |
| gwalchwyfyn llygeidiog | Eyed Hawk-moth | Smerinthus ocellata |
| gwalchwyfyn pum smotyn | Five-spotted Hawk-moth | Manduca quinquemaculatus |
| gwalchwyfyn rhesi arian | Silver-striped Hawk-moth | Hippotion celerio |
| gwalchwyfyn rhesog | Striped Hawk-moth | Hyles livornica |
| gwalchwyfyn y benglog | Death's-head Hawk-moth | Acherontia atropos |
| gwalchwyfyn y Canoldir | Mediterranean Hawk-moth | Hyles nicaea |
| gwalchwyfyn y ceirios | Wild Cherry Sphinx | Sphinx drupiferarum |
| gwalchwyfyn y fflamgoed | Spurge Hawk-moth | Hyles euphorbiae |
| gwalchwyfyn y friwydd | Bedstraw Hawk-moth | Hyles gallii |
| gwalchwyfyn y môr-rafnwydd | Sea Thorn Hawk-moth | Hyles hippophaes |
| gwalchwyfyn y pinwydd | Pine Hawk-moth | Hyloicus pinastri |
| gwalchwyfyn y pisgwydd | Lime Hawk-moth | Mimas tiliae |
| gwalchwyfyn y poplys | Poplar Hawk-moth | Laothoe populi |
| gwalchwyfyn y rhoswydd | Oleander Hawk-moth | Daphnis nerii |
| gwalchwyfyn y taglys | Convolvulus Hawk-moth | Agrius convolvuli |
| gwalchwyfyn y tomatos | Tomato Sphinx | Manduca sexta |
| gwalchwyfyn yr helyglys | Elephant Hawk-moth | Deilephila elpenor |
| gwalchwyfyn yr yswydd | Privet Hawk-moth | Sphinx ligustri |
| gwargwlwm bach | Minor Shoulder-Knot | Brachylomia viminalis |
| gwargwlwm y cypreswydd | Blair's Shoulder-knot | Lithophane leautieri |
| gwargwlwm yr ynn | Ash Shoulder-knot | Scotochrosta pulla |
| gwaswyfyn | Lackey | Malacosoma neustria |
| gwaswyfyn y morfa | Ground Lackey | Malacosoma castrensis |
| gweirlöyn Arran | Arran Brown | Erebia ligea |
| gweirlöyn bach y mynydd | Small Mountain Ringlet | Erebia epiphron |
| gweirlöyn bach y waun | Small Heath | pamphilus |
| gweirlöyn brych | Speckled Wood | Pararge aegeria |
| gweirlöyn cleisiog | Marbled White | Melanargia galathea |
| gweirlöyn hirlygeidiog | Almond-eyed Ringlet | Erebia alberganus |
| gweirlöyn llwyd | Grayling | Hipparchia semele |
| gweirlöyn llwyd gwythiennog | False Grayling | Arethusana arethusa |
| gweirlöyn llwyd y coed | Woodland Grayling | Hipparchia fagi |
| gweirlöyn llwydwelw | Hermit | Chazara briseis |
| gweirlöyn mawr y cloddiau | Large Wall | Lasiommata maera |
| gweirlöyn mawr y waun | Large Heath | Coenonympha tullia |
| gweirlöyn y cloddiau | Wall | Lasiommata megera |
| gweirlöyn y ddôl | Meadow Brown | Maniola jurtina |
| gweirlöyn y glaw | Ringlet | Aphantopus hyperantus |
| gweirlöyn y perthi | Hedge Brown, Gatekeeper | Pyronia tithonus |
| gweirlöyn yr Alban | Scotch Argus | Erebia aethiops aethiops |
| gwelltwyfyn Blair | Blair's Wainscot | Sedina buettneri |
| gwelltwyfyn Bond | Bond's Wainscot | Chortodes morrisii |
| gwelltwyfyn coch bach | Small Rufous | Coenobia rufa |
| gwelltwyfyn deusmotiog | Twin-spotted Wainscot | Archanara geminipuncta |
| gwelltwyfyn gewynnog | Brighton Wainscot | Oria musculosa |
| gwelltwyfyn gwarwyn | White-mantled Wainscot | Archanara neurica |
| gwelltwyfyn gwelw | Concolorous | Chortodes extrema |
| gwelltwyfyn gwythiennog | Brown-veined Wainscot | Archanara dissoluta |
| gwelltwyfyn llwytgoch | Mere Wainscot | Chortodes fluxa |
| gwelltwyfyn mawr | Large Wainscot | Rhizedra lutosa |
| gwelltwyfyn Morris | Morris's Wainscot | Chortodes morrisii morrisii |
| gwelltwyfyn sidan | Silky Wainscot | Chilodes maritimus |
| gwelltwyfyn tair llinell | Treble Lines | Charanyca trigrammica |
| gwelltwyfyn Webb | Webb's Wainscot | Archanara sparganii |
| gwelltwyfyn y brwyn | Rush Wainscot | Archanara algae |
| gwelltwyfyn y clymwellt | Lyme Grass | Chortodes elymi |
| gwelltwyfyn y cyrs | Fenn's Wainscot | Chortodes brevellinea |
| gwelltwyfyn y cyrs | Fen Wainscot | Arenostola phragmitidis |
| gwelltwyfyn y llafrwyn | Bulrush Wainscot | Nonagria typhae |
| gwelltwyfyn yr hesg | Small Wainscot | Chortodes pygmina |
| gwelltyn rhesog | Barred Straw | Eulithis pyraliata |
| gwensgod America | white speck | Mythimna unipuncta |
| gwensgod dramor | Cosmopolitan | Mythimna loreyi |
| gwensgod Dyfed | Devonshire Wainscot | Mythimna putrescens |
| gwensgod el wen | L-album Wainscot | Mythimna l-album |
| gwensgod fawr | Double-line | Mythimna turca |
| gwensgod felen | Mathew's Wainscot | Mythimna favicolor |
| gwensgod fflamliw | Flame Wainscot | Mythimna flammea |
| gwensgod firain | Delicate | Mythimna vitellina |
| gwensgod gwar rhesog | Shoulder-striped Wainscot | Mythimna comma |
| gwensgod gyffredin | Common Wainscot | Mythimna pallens |
| gwensgod ôladain dywyll | Smoky Wainscot | Mythimna impura impura |
| gwensgod oren | Brown-line Bright-eye | Mythimna conigera |
| gwensgod resog | Striped Wainscot | Mythimna pudorina |
| gwensgod rydlyd | Clay | Mythimna ferrago |
| gwensgod smotyn gwyn | White-point | Mythimna albipuncta |
| gwensgod y cyrs | Obscure Wainscot | Mythimna obsoleta |
| gwensgod y ffosydd | Southern Wainscot | Mythimna straminea |
| gwensgod y moresg | Shore Wainscot | Mythimna litoralis |
| gwibiwr arian | Silver-spotted Skipper | Hesperia comma |
| gwibiwr bach | Small Skipper | Thymelicus sylvestris |
| gwibiwr bach cornddu | Essex Skipper | Thymelicus lineola |
| gwibiwr brith | Grizzled Skipper | Pyrgus malvae |
| gwibiwr brith Oberthur | Oberthur's Grizzled Skipper | Pyrgus armoricanus |
| gwibiwr fflamgoch | Fiery Skipper | Hylephila phyleus |
| gwibiwr llwyd | Dingy Skipper | Erynnis tages |
| gwibiwr Lulworth | Lulworth Skipper | Thymelicus acteon |
| gwibiwr mawr | Large Skipper | Ochlodes faunus |
| gwibiwr y llennyrch | Chequered Skipper | Carterocephalus palaemon |
| gwibiwr yr hocys | Mallow Skipper | Carcharodus alceae |
| gwinau cyffredin | Chestnut | Conistra vaccinii |
| gwinau mannog | Dotted Chestnut | Conistra rubiginea |
| gwinau pengoch | Red-headed Chestnut | Conistra erythrocephala |
| gwinau tywyll | Dark Chestnut | Conistra ligula |
| gwladwr brith | Mottled Rustic | Caradrina morpheus |
| gwladwr brownddu | Deep-brown Dart | Aporophyla lutulenta |
| gwladwr brownddu'r Gogledd | Northern Deep-brown Dart | Aporophyla lueneburgensis |
| gwladwr bwaog | Scarce Arches | Luperina zollikoferi |
| gwladwr cleisiog | Dusky Sallow | Eremobia ochroleuca |
| gwladwr cyffredin | Common Rustic | Mesapamea secalis |
| gwladwr cyffredin bach | Lesser Common Rustic | Mesapamea didyma |
| gwladwr cyffredin Remm | Remm's Rustic | Mesapamea remmi |
| gwladwr Cymreig | Ashworth's Rustic | Xestia ashworthii |
| gwladwr du | Black Rustic | Aporophyla nigra |
| gwladwr Dumeril | Dumeril's Rustic | Luperina dumerilii |
| gwladwr gwridog | Rosy Rustic | Hydraecia micacea |
| gwladwr Lorimer | Lorimer's Rustic | Paradrina flavirena |
| gwladwr Porter | Porter's Rustic | Proxenus hospes |
| gwladwr rhydlyd | Brown Rustic | Rusina ferruginea |
| gwladwr siderog | Flounced Rustic | Luperina testacea |
| gwladwr y derw | Oak Rustic | Dryobota labecula |
| gwladwr y twyni | Sandhill Rustic | Luperina nickerlii |
| gwladwr yr Alban | Cousin German | Protolampra sobrina |
| gwladwr yr hydref | Autumnal Rustic | Eugnorisma glareosa |
| gwregys (Lepidoptera) | Rivulet | Perizoma affinitata |
| gwregys bach | Small Rivulet | Perizoma alchemillata |
| gwregys dau smotyn | Twin-spot Carpet | Perizoma didymata didymata |
| gwregys dwyres | Barred Rivulet | Perizoma bifaciata |
| gwregys melynfrown | Sandy Carpet | Perizoma flavofasciata |
| gwregys rhesog | Barred Carpet | Perizoma taeniata |
| gwregys tlws | Pretty Pinion | Perizoma blandiata |
| gwregys y gors | Marsh Carpet | Perizoma sagittata |
| gwregys y gwair | Grass Rivulet | Perizoma albulata albulata |
| gwregys y rhos | Heath Rivulet | Perizoma minorata |
| gwrid y gors | Rosy Marsh Moth | Coenophila subrosea |
| gwyfyn gludlys mawr | Barrett's Marbled Coronet | Hadena luteago |
| gwyfyn bresych | Cabbage Moth | Mamestra brassicae |
| gwyfyn brith | Peppered Moth | Biston betularia |
| gwyfyn cennog | Merveille du Jour | Dichonia aprilina |
| gwyfyn corn carw | Antler Moth | Cerapteryx graminis |
| gwyfyn cynffon gwennol | Swallow-tailed Moth | Ourapteryx sambucaria |
| gwyfyn cynnar | Early Moth | Theria primaria |
| gwyfyn dotiog | Dot Moth | Melanchra persicariae |
| gwyfyn drewllyd | Goat Moth | Cossus cossus |
| gwyfyn dwy adain | Bird's Wing | Dypterygia scabriuscula |
| gwyfyn dwyres | Double-barred | Caenurgina crassiuscula |
| gwyfyn dwyres a chilgant | Lunar Double-stripe | Minucia lunaris |
| gwyfyn dwyres y tamarisg | Trent Double-stripe | Clytie illunaris |
| gwyfyn ffacbys | Burnet Companion | Euclidia glyphica |
| gwyfyn gludlys brown | Lychnis | Hadena bicruris |
| gwyfyn gludlys cleisiog | Marbled Coronet | Hadena confusa |
| gwyfyn gludlys du a gwyn | Varied Coronet | Hadena compta |
| gwyfyn gludlys llwyd | Grey | Hadena caesia |
| gwyfyn gludlys melynddu | Tawny Shears | Hadena perplexa perplexa |
| gwyfyn gludlys porffor | Campion | Hadena rivularis |
| gwyfyn gludlys Sbaen | Viper's Bugloss | Hadena irregularis |
| gwyfyn gludlys smotyn gwyn | White Spot | Hadena albimacula |
| gwyfyn gludlys y codau | Pod Lover | Hadena perplexa |
| gwyfyn gwelw'r taglys | Pale Shoulder | Acontia lucida |
| gwyfyn Gwent | Silurian | Eriopygodes imbecilla |
| gwyfyn gwythi duon | Black-veined Moth | Siona lineata |
| gwyfyn letys | Small Ranunculus | Hecatera dysodea |
| gwyfyn llenni crychlyd | Angle Shades | Phlogophora meticulosa |
| gwyfyn llenni crychlyd bach | Small Angle Shades | Euplexia lucipara |
| gwyfyn lloeren | Satellite | Eupsilia transversa |
| gwyfyn llwyd cotwm | Angled Gem | Anomis sabulifera |
| gwyfyn llygwyn | Orache Moth | Trachea atriplicis |
| gwyfyn Mawrth | March Moth | Alsophila aescularia |
| gwyfyn mynydd du | Black Mountain Moth | Glacies coracina |
| gwyfyn oren | Orange Moth | Angerona prunaria |
| gwyfyn plu'r gweunydd | Haworth's Minor | Celaena haworthii |
| gwyfyn Rhagfyr | December Moth | Poecilocampa populi |
| gwyfyn sbectolog | Spectacle | Abrostola tripartita |
| gwyfyn sbectolog tywyll | Dark Spectacle | Abrostola triplasia |
| gwyfyn teires | Triple-barred | Mocis trifasciata |
| gwyfyn y banadl | Broom Moth | Melanchra pisi |
| gwyfyn y cadno | Fox Moth | Macrothylacia rubi |
| gwyfyn y lliflys | Reddish Buff | Acosmetia caliginosa |
| gwyfyn y Penrhyn | African | Perigea capensis |
| gwyfyn y rhos | Common Heath | Ematurga atomaria |
| gwyfyn y tagaradr | Rest Harrow | Aplasta ononaria |
| gwyfyn yr alan | Butterbur | Hydraecia petasitis |
| gwyfyn yr hocys | Marsh Mallow Moth | Hydraecia osseola |
| gwyn bach | Small White | Pieris rapae |
| gwyn bar llydan | Broad-barred White | Hecatera bicolorata |
| gwyn blaen oren | Orange-tip | Anthocharis cardamines |
| gwyn brithwyrdd | Dappled White | Euchloe simplonia |
| gwyn cleisiog | Clouded Silver | Lomographa temerata |
| gwyn coed Real | Real's wood white | Leptidea reali |
| gwyn dau smotyn | White-pinion Spotted | Lomographa bimaculata |
| gwyn drain duon | Sloe Carpet | Aleucis distinctata |
| gwyn godreog | Bordered White | Bupalus piniaria |
| gwyn gwythiennau duon | Black-veined White | Aporia crataegi |
| gwyn gwythiennau gwyrddion | Green-veined White | Pieris napi |
| gwyn mawr | Large White, Cabbage White | Pieris brassicae |
| gwyn rhesog | Common White Wave | Cabera pusaria |
| gwyn smotiog | Bath White | Pontia daplidice |
| gwyn tonnog | Common Wave | Cabera exanthemata |
| gwyn y coed | Wood White | Leptidea sinapis |
| gwynfannog | White-marked | Cerastis leucographa |
| gwyrdd brith | Brindled Green | Dryobotodes eremita |
| gwyrdd godre pigog | Spiny Bollworm | Earias biplaga |
| gwyrdd godre pinc | Green Silver-lines | Pseudoips prasinana |
| gwyrdd godreog | Cream-bordered Green Pea | Earias clorana |
| gwyrdd mawr | Scarce Silver-lines | Bena bicolorana |
| gwyrdd ocra | ? | Earias vittella |
| gwyrdd y Burren | Burren Green | Calamia tridens |
| gwyrdd yr Aifft | Egyptian Bollworm | Earias insulana |
| gwythïen goch fach | Small Blood-vein | Scopula imitaria |
| hen wrach | Mother Shipton | Callistege mi |
| isadain felen amryliw | Broad-bordered Yellow Underwing | Noctua fimbriata |
| isadain felen dywyll | Underwing | Noctua janthe |
| isadain felen fach | Lesser Yellow Underwing | Noctua comes |
| isadain felen fawr | Large Yellow Underwing | Noctua pronuba |
| isadain felen Langmaid | Noctua janthine | |
| isadain felen leiaf | Least Yellow Underwing | Noctua interjecta |
| isadain felen loerol | Lunar Yellow Underwing | Noctua orbona |
| llabed | Lappet | Gastropacha quercifolia |
| llabed fach | Small Lappet | Phyllodesma ilicifolia |
| llabed y pin | Pine-tree Lappet | Dendrolimus pini |
| lleian (lepidoptera) | Nun | Acontia aprica |
| llewpart | Leopard Moth | Zeuzera pyrina |
| llewpart y cyrs | Reed Leopard | Phragmataecia castaneae |
| llinell goch | Vestal | Rhodometra sacraria |
| llusgwyfyn rhuban | Festoon | Apoda limacodes |
| llusgwyfyn triongl | Triangle | Heterogenea asella |
| llwyd blodiog | Powdered Rustic | Hoplodrina superstes |
| llwyd gloyw | Anomalous | Stilbia anomala |
| llwyd llyfn | Rustic | Hoplodrina blanda |
| llwyd rhydlyd | Uncertain | Hoplodrina alsines |
| llwyd Vine | Vine's Rustic | Hoplodrina ambigua |
| llwyd y ffawydd | Lobster Moth | Stauropus fagi |
| llwyd y gors | Marsh Moth | Athetis pallustris |
| llwyd yr ocra | Grey Square | Pardasena virgulana |
| llwydfelyn | Clouded Yellow | Colias croceus |
| llwydfelyn Berger | Berger's Clouded Yellow | Colias alfacariensis |
| llwydfelyn gwelw | Pale Clouded Yellow | Colias hyale |
| llwydfelyn y rhos | Moorland Clouded Yellow | Colias palaeno |
| llwyfwyfyn brith | White-spotted Pinion | Cosmia diffinis |
| llwyfwyfyn canibalaidd | Dun-bar | Cosmia trapezina |
| llwyfwyfyn lloerol | Lunar-spotted Pinion | Cosmia pyralina |
| llwyfwyfyn smotiog | Lesser-spotted Pinion | Cosmia affinis |
| llwytyn melyn | Yellow Belle | Semiaspilates ochrearia |
| llwytyn y grug | Grass Wave | Perconia strigillaria |
| llwytyn y gwellt | Straw Belle | Aspitates gilvaria gilvaria |
| llwytyn y gwyddfid | Early Grey | Xylocampa areola |
| maen cennog | Feathered Ranunculus | Polymixis lichenea |
| maen croesog | Grey Chi | Antitype chi |
| maen mawr | Large Ranunculus | Polymixis flavicincta |
| mannog melynaidd | Straw Dot | Rivula sericealis |
| mantell garpiog | Comma | Polygonia c-album |
| mantell alarus | Camberwell Beauty | Aglais antiopa |
| mantell borffor | Purple Emperor | Apatura iris |
| mantell dramor | Painted Lady | Vanessa cardui |
| mantell dramor America | American Painted Lady | Vanessa virginiensis |
| mantell dywyll | Alchymist | Catephia alchymista |
| mantell fapadeiniog | European Map | Araschnia levana |
| mantell felyngoch | Julia | Dryas julia |
| mantell goch | Red Admiral | Vanessa atalanta |
| mantell goch India | Indian Red Admiral | Vanessa indica |
| mantell oren resog | Small Brown Shoemaker | Hypanartia lethe |
| mantell paun | Peacock | Inachis io |
| mantell resog | Zebra | Colobura dirce |
| mantell wen | White Admiral | Limenitis camilla |
| melyn brych | Speckled Yellow | Pseudopanthera macularia |
| melyn mannog | Hieroglyphic Moth | Diphthera festiva |
| melyn penfelyn | Sallow | Xanthia icteritia |
| melyn pengoch | Pink-barred sallow | Xanthia togata |
| melyn porffor-resog | Purple-barred Yellow | Lythria purpuraria |
| melyn rhesog | Barred Yellow | Cidaria fulvata |
| melyn rhesog | Barred Sallow | Xanthia aurago |
| melyn y drain | Brimstone Moth | Opisthograptis luteolata |
| melyn y llwyf | Orange Sallow | Xanthia citrago |
| melyn y pisgwydd | Dusky-lemon Sallow | Xanthia gilvago |
| melyn y poplys | Pale-lemon Sallow | Xanthia ocellaris |
| melyn y rhafnwydd | Brimstone | Gonepteryx rhamni rhamni |
| melyn yr onnen | Centre-barred Sallow | Atethmia centrago |
| melyngoch cleisiog | Marbled Clover | Heliothis viriplaca |
| melyngoch godreog | Bordered Sallow | Pyrrhia umbra |
| melyngoch godreog | Bordered Straw | Heliothis peltigera |
| melyngoch godreog y Dwyrain | Eastern Bordered Straw | Heliothis nubigera |
| melyngoch gwar rhesog | Shoulder-striped Clover | Heliothis maritima |
| melyngoch plaen | Old World Bollworm | Helicoverpa armigera |
| melyngoch porffor | Pease Blossom | Periphanes delphinii |
| moca | Mocha | Cyclophora annularia |
| moca Blair | Blair's Mocha | Cyclophora puppillaria |
| moca ffug | False Mocha | Cyclophora porata |
| moca gwridog | Maiden's Blush | Cyclophora punctaria |
| moca tywyll | Dingy Mocha | Cyclophora pendularia |
| moca'r fedwen | Birch Mocha | Cyclophora albipunctata |
| moca'r ffawydd | Clay Triple-lines | Cyclophora linearia |
| modrwyog | Annulet | Charissa obscurata |
| modrwyog Iwerddon | Irish Annulet | Odontognophos dumetata |
| modrwyog y rhos | Grey Scalloped Bar | Dyscia fagaria |
| modrwyog yr Alban | Scotch Annulet | Gnophos obfuscatus |
| ôladain berlaidd | Pearly Underwing | Peridroma saucia |
| ôl-adain felen dywyll | Small Dark Yellow Underwing | Anarta cordigera |
| ôl-adain felen fach | Small Yellow Underwing | Panemeria tenebrata |
| ôl-adain felen hardd | Beautiful Yellow Underwing | Anarta myrtilli |
| ôl-adain felen y derw | Oak Yellow Underwing | Catocala nymphagoga |
| ôl-adain goch | Red Underwing | Catocala nupta |
| ôl-adain goch Ffrainc | French red underwing | Catocala elocata |
| ôl-adain gopor | Copper Underwing | Amphipyra pyramidea |
| ôl-adain gopor Svensson | Svensson's Copper Underwing | Amphipyra berbera |
| ôl-adain las | Clifden Nonpareil | Catocala fraxini |
| ôl-adain loerol | Lunar Underwing | Omphaloscelis lunosa |
| ôl-adain lyglwyd | Mouse Moth | Amphipyra tragopoginis |
| ôl-adain oren | Orange Underwing | Archiearis parthenias |
| ôl-adain oren fach | Light Orange Underwing | Archiearis notha |
| ôl-adain ruddgoch dywyll | Dark Crimson Underwing | Catocala sponsa |
| ôl-adain ruddgoch olau | Light Crimson Underwing | Catocala promissa |
| ôl-adain wellt | Straw Underwing | Thalpophila matura |
| ôl-adain wen ymyl lydan | Broad-bordered White Underwing | Anarta melanopa |
| ôl-adain wridog | Rosy Underwing | Catocala electa |
| oren coch | Brick | Agrochola circellaris |
| oren llinell felen | Yellow-line Quaker | Agrochola macilenta |
| oren llinell goch | Red-line Quaker | Agrochola lota |
| pali brown | Bright-line Brown-eye | Lacanobia oleracea |
| pali dau smotyn | Double-spot Brocade | Meganephria bimaculosa |
| pali dwy aren | Glaucous Shears | Papestra biren |
| pali golau | Light Brocade | Lacanobia w-latinum |
| pali gwarwelw | Pale-shouldered Brocade | Lacanobia thalassina |
| pali gwelw | Stranger | Lacanobia blenna |
| pali hardd | Beautiful Brocade | Lacanobia contigua |
| pali llin y llyffant | Toadflax Brocade | Calophasia lunula |
| arennau disglair | Shears | Hada plebeja |
| pali trwyn-y-llo | Antirrhinum Brocade | Calophasia playptera |
| pali tywyll | Dark Brocade | Blepharita adusta |
| pali ysgithrog | Dog's Tooth | Lacanobia suasa |
| pansi las | Blue Pansy | Junonia oenone |
| pansi'r ddôl | Albin's Hampstead Eye | Junonia villida |
| pedwar smotyn y taglys | Four-spotted | Tyta luctuosa |
| pefryn bach pinc | Rosy Marbled | Elaphria venustula |
| peli pinc | Peach Blossom | Thyatira batis |
| pwtyn adain gul | Narrow-winged Pug | Eupithecia nanata nanata |
| pwtyn bach | Dwarf Pug | Eupithecia tantillaria |
| pwtyn brith | Mottled Pug | Eupithecia exiguata |
| pwtyn brych | Brindled Pug | Eupithecia abbreviata |
| pwtyn bysedd y cŵn | Foxglove Pug | Eupithecia pulchellata |
| pwtyn cleisiog | Marbled Pug | Eupithecia irriguata |
| pwtyn cyffredin | Common Pug | Eupithecia vulgata |
| pwtyn deintiog | Dentated Pug | Anticollix sparsata |
| pwtyn Doubleday | Doubleday's Pug | Eupithecia cauchiata |
| pwtyn dwyresog | Double-striped Pug | Gymnoscelis rufifasciata |
| pwtyn Fletcher | Fletcher's Pug | Eupithecia egenaria |
| pwtyn Freyer | Freyer's Pug | Eupithecia intricata |
| pwtyn gwelw | Bleached Pug | Eupithecia expallidata |
| pwtyn gwyrdd | Green Pug | Chloroclystis rectangulata |
| pwtyn Haworth | Haworth's Pug | Eupithecia haworthiata |
| pwtyn llin | Toadflax Pug | Eupithecia inariata |
| pwtyn llwyd | Grey Pug | Eupithecia subfuscata |
| pwtyn llygeidiog | Lime-speck Pug | Eupithecia centaureata |
| pwtyn main | Slender Pug | Eupithecia tenuiata |
| pwtyn melyngoch | Tawny Speckled Pug | Eupithecia icterata |
| pwtyn Mere | Mere's Pug | Eupithecia intricata |
| pwtyn onglog | Angle-barred Pug | Eupithecia innotata |
| pwtyn plaen | Plain Pug | Eupithecia simpliciata |
| pwtyn plwm | Lead-coloured Pug | Eupithecia plumbeolata |
| pwtyn rhwyllog | Netted Pug | Eupithecia venosata |
| pwtyn smotiau gwynion | White-spotted Pug | Eupithecia tripunctaria |
| pwtyn smotiog | Pinion-spotted Pug | Eupithecia insigniata |
| pwtyn tri smotyn | Triple-spotted Pug | Eupithecia trisignaria |
| pwtyn troed yr ŵydd | Goosefoot Pug | Eupithecia sinuosaria |
| pwtyn y clefryn | Jasione Pug | Eupithecia denotata |
| pwtyn y clychlys | Campanula Pug | Eupithecia denotata denotata |
| pwtyn y cypreswydd | Cypress Pug | Eupithecia phoeniceata |
| pwtyn y cyrens | Currant Pug | Eupithecia assimilata |
| pwtyn y derw | Oak-tree Pug | Eupithecia dodoneata |
| pwtyn y drain duon | Sloe Pug | Pasaphila chloerata |
| pwtyn y feidiog | Bordered Pug | Eupithecia succenturiata |
| pwtyn y ffyrch | V-Pug | Chloroclystis v-ata |
| pwtyn y gors | Marsh Pug | Eupithecia pygmaeata |
| pwtyn y grug | Ling Pug | Eupithecia absinthiata |
| pwtyn y gwreiddiriog | Pimpinel Pug | Eupithecia pimpinellata |
| pwtyn y llarwydd | Larch Pug | Eupithecia lariciata |
| pwtyn y llus | Bilberry Pug | Chloroclystis debiliata |
| pwtyn y masarn | Maple Pug | Eupithecia inturbata |
| pwtyn y meryw | Juniper Pug | Eupithecia pusillata |
| pwtyn y milddail | Yarrow Pug | Eupithecia millefoliata |
| pwtyn y morfa | Scarce Pug | Eupithecia extensaria |
| pwtyn y peradyl | Shaded Pug | Eupithecia subumbrata |
| pwtyn y pinwydd | Ochreous Pug | Eupithecia indigata |
| pwtyn y sbriws | Cloaked Pug | Eupithecia abietaria |
| pwtyn y Sianel | Channel Islands Pug | Eupithecia ultimaria |
| pwtyn y teim | Thyme Pug | Eupithecia distinctaria |
| pwtyn y triaglog | Valerian Pug | Eupithecia valerianata |
| pwtyn y waun | Satyr Pug | Eupithecia satyrata |
| pwtyn y wermod | Wormwood Pug | Eupithecia absinthiata |
| pwtyn yr Alban | Edinburgh Pug | Eupithecia intricata |
| pwtyn yr eurwialen | Golden-rod Pug | Eupithecia virgaureata |
| pwtyn yr ynn | ash pug | Eupithecia fraxinata |
| rhesen ddeifiog | Barred Umber | Plagodis pulveraria |
| rhesen gam | Broom-tip | Chesias rufata |
| rhesen letraws | Oblique Striped | Phibalapteryx virgata |
| rhesen lydan dywyll | Shaded Broad-bar | Scotopteryx chenopodiata |
| rhesen wen y rhedyn | Brown Silver-line | Petrophora chlorosata |
| rhesen y banadl | Streak | Chesias legatella |
| rhesog y llaethlys | Small Purple-barred | Phytometra viridaria |
| rhesog y taglys | Spotted Sulphur | Emmelia trabealis |
| rhiain gynnar | Lead Belle | Scotopteryx mucronata |
| rhiain hwyr | July Belle | Scotopteryx luridata |
| rhiain y pin | Pine Beauty | Panolis flammea |
| rhisglyn y cyll | Scarce Umber | Agriopis aurantiaria |
| rhisglyn brith | Brindled Beauty | Lycia hirtaria |
| rhisglyn brith bach | Small Brindled Beauty | Apocheima hispidaria |
| rhisglyn brith gwelw | Pale Brindled Beauty | Apocheima pilosaria |
| rhisglyn brych | Mottled Beauty | Alcis repandata |
| rhisglyn brych | Speckled Beauty | Fagivorina arenaria |
| rhisglyn Caint | Lydd Beauty | Peribatodes ilicaria |
| rhisglyn cylchog | Ringed Carpet | Cleora cinctaria |
| rhisglyn gwelw | Pale Oak Beauty | Hypomecis punctinalis |
| rhisglyn mannog | Dotted Carpet | Alcis jubata |
| rhisglyn mawr | Great Oak Beauty | Hypomecis roboraria |
| rhisglyn minfylchog | Engrailed | Ectropis bistortata |
| rhisglyn minfylchog bach | Small Engrailed | Ectropis crepuscularia |
| rhisglyn sidan | Satin Beauty | Deileptenia ribeata |
| rhisglyn smotyn gwyn | Brindled White-spot | Parectropis similaria |
| rhisglyn smotyn sgwâr | Square Spot | Paradarisa consonaria |
| rhisglyn tonnog | Waved Umber | Menophra abruptaria |
| rhisglyn y bedw | Grey Birch | Aethalura punctulata |
| rhisglyn y cen | Brussels Lace | Cleorodes lichenaria |
| rhisglyn y derw | Oak Beauty | Biston strataria |
| rhisglyn y Gogledd | Rannoch Brindled Beauty | Lycia lapponaria |
| rhisglyn y gwanwyn | Spring Usher | Agriopis leucophaearia |
| rhisglyn y morfa | Belted Beauty | Lycia zonaria |
| rhisglyn y sbriws | Feathered Beauty | Peribatodes secundaria |
| rhisglyn ymyl fraith | Dotted Border | Agriopis marginaria |
| rhisglyn ymyl lwyd | Bordered Grey | Selidosema brunnearia |
| rhisglyn yr helyg | Willow Beauty | Peribatodes rhomboidaria |
| Rhufeiniwr | Latin | Callopistria juventina |
| rhwyll bluog | Feathered Gothic | Tholera decimalis |
| rhwyll y crawcwellt | Hedge Rustic | Tholera cespitis |
| rhwyll ymylog | Bordered Gothic | Heliophobus reticulata |
| sbardun brith | Spotted Clover | Schinia scutosa |
| sbardun y benfelen | Scarce Meal-moth | Schinia rivulosa |
| seffyr delltog | Latticed Heath | Chiasmia clathrata clathrata |
| seffyr llwyd | Dusky Peacock | Macaria signaria |
| seffyr melyn | Frosted Yellow | Isturgia limbaria |
| seffyr Rannoch | Rannoch Looper | Itame brunneata |
| seffyr rhesen winau | Tawny-barred Angle | Macaria liturata |
| seffyr rhwyllog | Netted Mountain Moth | Macaria carbonaria |
| seffyr salw | Dingy Angle | Macaria praeatomata |
| seffyr sgolpiog | Sharp-angled Peacock | Macaria alternata |
| seffyr y bedw | Peacock Moth | Macaria notata |
| seffyr y ffyrch | V-Moth | Macaria wauaria |
| seraff llwyd | Early Tooth-striped | Trichopteryx carpinata |
| seraff melyn | Yellow-barred Brindle | Acasis viretata |
| seraff yr aethnen | Seraphim | Lobophora halterata |
| seraff yr helyg | Small Seraphim | Pterapherapteryx sexalata |
| seraff yr yswydd | Barred Tooth-striped | Trichopteryx polycommata |
| sidan cynffonog | Local Long-tailed Satin | Trichiocercus sparshalli |
| siobyn | Vapourer | Orgyia antiqua |
| siobyn bwaog | Black Arches | Lymantria monarcha |
| siobyn cynffon felen | Yellow-tail | Euproctis similis |
| siobyn cynffon frown | Brown-tail | Euproctis chrysorrhoea |
| siobyn fforch ddu | Black V Moth | Arctornis l-nigrum |
| siobyn gwelw | Pale Tussock | Calliteara pudibunda |
| siobyn prin | Scarce Vapourer | Orgyia recens |
| siobyn tywyll | Dark Tussock | Dicallomera fascelina |
| siobyn y cyrs | Reed Tussock | Laelia coenosa |
| siobyn y poplys | White Satin Moth | Leucoma salicis |
| siobyn y sipsi | Gypsy Moth | Lymantria dispar |
| smotyn llwydwyrdd | Green-brindled Dot | Valeria oleagina |
| smotyn sgwar bach | Small Square-spot | Diarsia rubi |
| smotyn sgwar y fign | Fen Square-spot | Diarsia florida |
| tant cyffredin | Common Lutestring | Ochropacha duplaris |
| tant cyrn melyn | Yellow-horned | Achyla flavicornis |
| tant ffigwr wyth deg | Figure of Eighty | Tethea ocularis |
| tant sidan | Satin Lutestring | Tetheella fluctuosa |
| tant siriol | Frosted Green | Polyploca ridens |
| tant y derw | Oak Lutestring | Cymatophorima diluta |
| tant y poplys | Poplar Lutestring | Tethea or or |
| teigr bach | Wood Tiger | Parasemia plantaginis |
| teigr cochddu | Ruby Tiger | Phragmatobia fuliginosa |
| teigr Dyfnaint | Jersey Tiger | Euplagia quadripunctaria |
| teigr llwydfelyn | Isabelline Tiger | Pyrrharctia isabella |
| teigr ôladain felen | Cream-spot Tiger | Arctia villica |
| teigr ôl-adain goch | Scarlet Tiger | Callimorpha dominula |
| teigr y benfelen | Cinnabar | Tyria jacobaeae |
| teigr yr ardd | Garden Tiger | Arctia caja |
| teithiwr | Passenger | Dysgonia algira |
| tlws y bedw | Kentish Glory | Endromis versicolora |
| ton siderog fawr | Large Lace Border | Scopula limboundata |
| ton arfor | Mullein Wave | Scopula marginepunctata |
| ton blaen | Plain Wave | Idaea straminata |
| ton borffor | Tawny Wave | Scopula rubiginata |
| ton ddieithr | Strange Wave | Idaea laevigata |
| ton fach lwyd | Small Dusty Wave | Idaea seriata |
| ton felen | Ochraceous Wave | Idaea serpentata |
| ton finfylchog fach | Small Scallop | Idaea emarginata |
| ton frech fach | Least Carpet | Idaea rusticata |
| ton Gwynedd | Weaver's Wave | Idaea contiguaria |
| ton lachar | Bright Wave | Idaea ochrata |
| ton Lewes | Lewes Wave | Scopula immorata |
| ton lwyd | Smoky Wave | Scopula ternata |
| ton onglog | Sub-angled Wave | Scopula nigropunctata |
| ton resog | Streaked Wave | Scopula virgulata |
| ton rhubanog | Riband Wave | Idaea aversata |
| ton rhubanog Portland | Portland Ribbon Wave | Idaea degeneraria |
| ton rydlyd | Rusty Wave | Idaea inquinata |
| ton sidan | Silky Wave | Idaea dilutaria |
| ton sidanwe | Satin Wave | Idaea subsericeata |
| ton siderog | Lace Border | Scopula ornata |
| ton tri smotyn | Treble Brown Spot | Idaea trigeminata |
| ton un smotyn | Single-dotted Wave | Idaea dimidiata |
| ton welw | Cream Wave | Scopula floslactata |
| ton welw fach | Lesser Cream Wave | Scopula immutata |
| ton wen leiaf | Dwarf Cream Wave | Idaea fuscovenosa |
| ton wridog | Rosy Wave | Scopula emutaria |
| ton ymyl fraith | Dotted Border Wave | Idaea sylvestraria |
| ton ymyl lwyd | Small Fan-footed Wave | Idaea biselata |
| ton Ynys Wyth | Isle of Wight Wave | Idaea humiliata |
| trilliw bach | Small Tortoiseshell | Aglais urticae, Aglais |
| trilliw mawr | Large Tortoiseshell | Aglais polychloros |
| trilliw prin | Scarce Tortoiseshell | Aglais xanthomelas |
| troedwas adain gron | Round-winged Muslin | Thumatha senex |
| troedwas bach | Pigmy Footman | Eilema pygmaeola pygmaeola |
| troedwas brith | Speckled Footman | Coscinia cribraria |
| troedwas brithgoch | Crimson Speckled Footman | Utetheisa pulchella |
| troedwas brych | Dotted Footman | Pelosia muscerda |
| troedwas brych bach | Small Dotted Footman | Pelosia obtusa |
| troedwas cyffredin | Common Footman | Eilema lurideola |
| troedwas gweog | Muslin Footman | Nudaria mundana |
| troedwas gwlithog | Dew Footman | Setina irrorella |
| troedwas gwridog | Rosy Footman | Miltochrista miniata |
| troedwas gyddfgoch | Red-necked Footman | Atolmis rubricollis |
| troedwas hardd | Beautiful Utetheisa | Utetheisa bella |
| troedwas llwydaidd | Dingy Footman | Eilema griseola |
| troedwas llwydfelyn | Buff Footman | Eilema depressa |
| troedwas llwydwyn | Hoary Footman | Eilema caniola |
| troedwas melyngoch | Orange Footman | Eilema sororcula |
| troedwas pedwar smotyn bach | Four-dotted Footman | Cybosia mesomella |
| troedwas pedwar smotyn mawr | Four-spotted Footman | Lithosia quadra |
| troedwas prin | Scarce Footman | Eilema complana |
| troedwas rhesog | Feathered Footman | Spiris striata |
| troedwas sidanaidd | Northern Footman | Eilema sericea |
| trwynog | Snout | Hypena proboscidalis |
| trwynog adain resog | Pinion-streaked Snout | Schrankia costaestrigalis |
| trwynog blodiog | Waved Tabby | Idia aemula |
| trwynog bychan | Marsh Oblique-barred | Hypenodes humidalis |
| trwynog croesryw | Autumnal Snout | Schrankia intermedialis |
| trwynog du | Black Snout | Plathypena scabra |
| trwynog dwyres | Twin-striped Tabby | Idia lubricalis |
| trwynog llinell wen | White-line Snout | Schrankia taenialis |
| trwynog praff | Paignton Snout | Hypena obesalis |
| trwynog tonnog | Bloxworth Snout | Hypena obsitalis |
| trwynog y rhos | Beautiful Snout | Hypena crassalis |
| trwynog yr aethnen | Lesser Belle | Colobochyla salicalis |
| trwynog yr hopys | Buttoned Snout | Hypena rostralis |
| tusw cleisiog | Marbled Tuffet | Charadra deridens |
| tusw'r cyll | Nut-tree Tussock | Colocasia coryli |
| uwchadain oren | Orange Upperwing | Jodia croceago |
| wylun bach | Small Eggar | Eriogaster lanestris |
| wylun gwelw | Pale Eggar | Trichiura crataegi |
| wylun gwelw'r borfa | Pale Grass Eggar | Lasiocampa trifolii |
| wylun y borfa | Grass Eggar | Lasiocampa trifolii trifolii |
| wylun y derw | Oak Eggar | Lasiocampa quercus quercus |
| wylun y grug | Northern Eggar | Lasiocampa quercus |
| yfwr gwlith | Drinker | Euthrix potatoria |
| ymdeithiwr y derw | Oak Processionary | Thaumetopoea processionea |
| ymdeithiwr y pinwydd | Pine Processionary | Thaumetopoea pityocampa |
| ymerawdwr | Emperor Moth | Saturnia pavonia |
| ymerawdwr y gellyg | Great Peacock Moth | Saturnia pyri |
Cyfeiriadau
[golygu | golygu cod]- ↑ "Cymdeithas Edward Llwyd; adalwyd 22 Ebrill 2012". Archifwyd o'r gwreiddiol ar 2012-07-17. Cyrchwyd 2021-02-20.
- ↑ "Cyngor Cefn Gwlad Cymru; adalwyd 22 Ebrill 2012". Archifwyd o'r gwreiddiol ar 2013-10-13. Cyrchwyd 2012-04-27.