Dart gwynresog bach

Gwyfyn sy'n perthyn i urdd y Lepidoptera yw **dart gwynresog bach**, sy'n enw gwrywaidd; yr enw lluosog ydy **dartiau gwynresog bach**; yr enw Saesneg yw *Small White-line Dart*, a'r enw gwyddonol yw *Euxoa crypta*.

Gellir dosbarthu'r pryfaid (neu'r Insecta) sy'n perthyn i'r Urdd a elwir yn Lepidoptera yn ddwy ran: y gloynnod byw a'r gwyfynod. Mae'r dosbarthiad hwn yn cynnyws mwy na 180,000 o rywogaethau mewn tua 128 o deuluoedd.

Wedi deor o'i ŵy mae'r dart gwynresog bach yn lindysyn sy'n bwyta llawer o ddail, ac wedyn mae'n troi i fod yn chwiler. Daw allan o'r chwiler ar ôl rhai wythnosau. Mae pedwar cyfnod yng nghylchred bywyd glöynnod byw a gwyfynod: ŵy, lindysyn, chwiler ac oedolyn.

## Rhywogaethau 
* *Euxoa aberrans* McDunnough, 1932
* *Euxoa absona* Lafontaine, 1987
* *Euxoa acuminifera* (Eversmann, 1854)
* *Euxoa adumbrata* (Eversmann, 1842)
* *Euxoa aequalis* (Harvey, 1876)
* *Euxoa agema* (Strecker, 1899)
* *Euxoa albipennis* (Grote, 1876)
* *Euxoa altens* McDunnough, 1946
* *Euxoa anarmodia* (Staudinger, 1897)
* *Euxoa annulipes* (Smith, 1890)
* *Euxoa antica* Lafontaine, 1974
* *Euxoa apopsis* Troubridge & Lafontaine, 2010
* *Euxoa aquilina* (Denis & Schiffermüller, 1775)
* *Euxoa atomaris* (Smith, 1890)
* *Euxoa atristrigata* (Smith, 1890)
* *Euxoa aurantiaca* Lafontaine, 1974
* *Euxoa auripennis* Lafontaine, 1974
* *Euxoa aurulenta* (Smith, 1890)
* *Euxoa austrina* Hardwick, 1968
* *Euxoa auxiliaris* – Army Cutworm (Grote, 1873)
* *Euxoa baja* Lafontaine, 1987
* *Euxoa basalis* (Grote, 1879)
* *Euxoa basigramma* (Staudinger, 1870)
* *Euxoa beatissima* (Rebel, 1917)
* *Euxoa bicollaris* (Grote, 1878)
* *Euxoa bifasciata* (Smith, 1888)
* *Euxoa biformata* Smith, 1910
* *Euxoa birivia* (Denis & Schiffermüller, 1775)
* *Euxoa bochus* (Morrison, 1874)
* *Euxoa bogdanovi* (Erschov, 1873)
* *Euxoa bostoniensis* (Grote, 1874)
* *Euxoa brevipennis* (Smith, 1888)
* *Euxoa brunneigera* (Grote, 1876)
* *Euxoa camalpa* (Dyar, 1912)
* *Euxoa campestris* (Grote, 1875)
* *Euxoa cana* Lafontaine, 1974
* *Euxoa canariensis* Rebel, 1902
* *Euxoa cashmirensis* Hampson 1903
* *Euxoa castanea* Lafontaine, 1981
* *Euxoa catenula* (Grote, 1879)
* *Euxoa centralis* (Staudinger, 1899)
* *Euxoa chimoensis* Hardwick, 1966
* *Euxoa choris* (Harvey, 1876)
* *Euxoa christophi* (Staudinger, 1870)
* *Euxoa churchillensis* (McDunnough, 1932)
* *Euxoa cicatricosa* (Grote & Robinson, 1865)
* *Euxoa cinchonina* (Guenée, 1852)
* *Euxoa cincta* Barnes & Benjamin, 1924
* *Euxoa cinereopallida* (Smith, 1903)
* *Euxoa cinnabarina* Barnes & McDunnough, 1918
* *Euxoa citricolor* (Grote, 1880)
* *Euxoa clauda* Püngeler, 1906
* *Euxoa clausa* McDunnough, 1923
* *Euxoa coconino* Lafontaine, 1987
* *Euxoa cognita* (Staudinger, 1881)
* *Euxoa comosa* (Morrison, 1876)
* *Euxoa cona* (Strecker, 1898)
* *Euxoa conjuncta* (Smith, 1890)
* *Euxoa conspicua* (Hübner, [1827])
* *Euxoa continentalis* Reisser, 1935
* *Euxoa cos* (Hübner, [1824])
* *Euxoa costata* (Grote, 1876)
* *Euxoa crassilinea* (Wallengren, 1860)
* *Euxoa crypta* (Dadd, 1927)
* *Euxoa cryptica* Hardwick, 1968
* *Euxoa culminicola* (Staudinger, 1870)
* *Euxoa cursoria* – Coast Dart (Hufnagel, 1766)
* *Euxoa dargo* (Strecker, 1898)
* *Euxoa declarata* (Walker, 1865)
* *Euxoa decora* (Denis & Schiffermüller, 1775)
* *Euxoa deficiens* (Wagner, 1913)
* *Euxoa derrae* Hacker, 1985
* *Euxoa deserta* (Staudinger, 1870)
* *Euxoa deserticola* I.Kozhantshikov, 1937
* *Euxoa detersa* (Walker, 1856)
* *Euxoa diaphora* Boursin, 1928
* *Euxoa difformis* (Smith, 1900) (syn: *Euxoa mercedes* Barnes & McDunnough, 1912)
* *Euxoa dissona* (Möschler, 1860)
* *Euxoa distinguenda* (Lederer, 1857)
* *Euxoa divergens* (Walker, [1857])
* *Euxoa dodi* McDunnough, 1923
* *Euxoa edictalis* (Smith, 1893)
* *Euxoa emma* L. G. Crabo & A. Crabo, 2007 
* *Euxoa emolliensis* (Hampson, 1905)
* *Euxoa enixa* (Püngeler, 1906)
* *Euxoa eruta* (Hübner, [1827])
* *Euxoa excogita* (Smith, 1900)
* *Euxoa extranea* (Smith, 1888)
* *Euxoa fallax* (Eversmann, 1854)
* *Euxoa faulkneri* Mustelin, 2000
* *Euxoa fissa* Staudinger, 1895
* *Euxoa flavicollis* (Smith, 1888)
* *Euxoa flavidens* (Smith, 1888)
* *Euxoa flavogrisea* Corti, 1932
* *Euxoa foeda* (Lederer, 1855)
* *Euxoa foeminalis* (Smith, 1900)
* *Euxoa franclemonti* Lafontaine, 1987 
* *Euxoa fumalis* (Grote, 1873)
* *Euxoa furtivus* (Smith, 1890) 
* *Euxoa fuscigera* (Grote, 1874) (sometimes misspelled as *fuscigerus*)
* *Euxoa glabella* Wagner, 1930
* *Euxoa goetria* I.Kozhantshikov, 1929
* *Euxoa guadalupensis* Lafontaine & Byers, 1982
* *Euxoa hardwicki* Lafontaine, 1987 
* *Euxoa hastifera* (Donzel, 1848)
* *Euxoa haverkampfi* (Standfuss, 1893)
* *Euxoa henrietta* (Smith, 1900)
* *Euxoa heringi* (Staudinger, 1877)
* *Euxoa hilaris* (Freyer, 1838)
* *Euxoa hollemani* (Grote, 1874) (syn: *Euxoa andera* Smith, 1910)
* *Euxoa homicida* (Staudinger, 1900)
* *Euxoa hyperborea* Lafontaine, 1987 
* *Euxoa idahoensis* (Grote, 1878)
* *Euxoa immixta* (Grote, 1881)
* *Euxoa inconcinna* (Harvey, 1875)
* *Euxoa infausta* (Walker, 1865)
* *Euxoa infracta* (Morrison, 1875)
* *Euxoa inscripta* Lafontaine, 1981
* *Euxoa intermontana* Lafontaine, 1975
* *Euxoa intolerabilis* (Püngeler, 1902)
* *Euxoa intrita* (Morrison, 1875)
* *Euxoa inyoca* Benjamin, 1936
* *Euxoa juliae* Hardwick, 1968
* *Euxoa karschi* (Graeser, [1890] 1889)
* *Euxoa laetificans* Smith, 1894
* *Euxoa lafontainei* Metzler & Forbes, 2009
* *Euxoa latro* (Barnes & Benjamin, 1926)
* *Euxoa lecerfi* Zerny, 1934
* *Euxoa leuschneri* Lafontaine, 1987 
* *Euxoa lewisi* (Grote, 1873)
** *Euxoa lewisi lewisi* (Grote, 1873)
** *Euxoa lewisi julia* Hardwick, 1968
* *Euxoa lilloeet* McDunnough, 1927
* *Euxoa lineifrons* (Smith, 1890)
* *Euxoa lucida* Barnes & McDunnough, 1912
* *Euxoa luctuosa* Lafontaine, 1976
* *Euxoa macleani* McDunnough, 1927
* *Euxoa macrodentata* Hardwick, 1965
* *Euxoa maderensis* Lafontaine, 1976
* *Euxoa maimes* (Smith, 1903)
* *Euxoa malickyi* Varga, 1990
* *Euxoa manitobana* McDunnough, 1925
* *Euxoa mansour* (Le Cerf, 1933)
* *Euxoa medialis* (Smith, 1888)
* *Euxoa melana* Lafontaine, 1975
* *Euxoa melura* McDunnough, 1932
* *Euxoa mendelis* Fernández, 1915
* *Euxoa messoria* – Reaper Dart (Harris, 1841)
* *Euxoa mimallonis* (Grote, 1873)
* *Euxoa misturata* (Smith, 1890)
* *Euxoa mitis* (Smith, 1894)
* *Euxoa mobergi* Fibiger, 1990
* *Euxoa moerens* (Grote, 1883)
* *Euxoa mojave* Lafontaine, 1987
* *Euxoa montana* (Morrison, 1875)
* *Euxoa montivaga* Fibiger, 1997
* *Euxoa muldersi* Lafontaine & Hensel, 2010
* *Euxoa munis* (Grote, 1879)
* *Euxoa murdocki* (Smith, 1890)
* *Euxoa mustelina* (Christoph, 1876)
* *Euxoa nevada* (Smith, 1900)
* *Euxoa nevadensis* Corti, 1928
* *Euxoa nigricans* – Garden Dart (Linnaeus, 1761)
* *Euxoa niveilinea* (Grote, [1883])
* *Euxoa nomas* Erschov, 1874 (syn: *Euxoa incognita* (Smith, 1894))
* *Euxoa nostra* (Smith, 1890)
* *Euxoa nyctopis* Hampson, 1903
* *Euxoa obelisca* – Square-Spot Dart (Denis & Schiffermüller, 1775)
* *Euxoa obeliscoides* (Guenée, 1852)
* *Euxoa oberfoelli* Hardwick, 1973
* *Euxoa oblongistigma* (Smith, 1888)
* *Euxoa occidentalis* Lafontaine & Byers, 1982
* *Euxoa ochrogaster* – Redbacked Cutworm (Guenée, 1852)
* *Euxoa olivalis* (Grote, 1879)
* *Euxoa olivia* (Morrison, 1876)
* *Euxoa oncocnemoides* (Barnes & Benjamin, 1926)
* *Euxoa oranaria* (Bang-Haas, 1906)
* *Euxoa pallidimacula* Lafontaine, 1987
* *Euxoa pallipennis* (Smith, 1888)
* *Euxoa penelope* Fibiger, 1997
* *Euxoa perexcellens* (Grote, 1875)
* *Euxoa permixta* McDunnough, 1940
* *Euxoa perolivalis* (Smith, 1905)
* *Euxoa perpolita* (Morrison, 1876)
* *Euxoa pestula* Smith, 1904
* *Euxoa phantoma* (Kozhanchikov, 1928)
* *Euxoa pimensis* Barnes & McDunnough, 1910
* *Euxoa piniae* Buckett & Bauer, 1964
* *Euxoa plagigera* (Morrison, 1875)
* *Euxoa pleuritica* (Grote, 1876)
* *Euxoa pluralis* (Grote, 1878)
* *Euxoa powelli* (Oberthür, 1912)
* *Euxoa punctigera* (Walker, 1865)
* *Euxoa quadridentata* (Grote & Robinson, 1865)
* *Euxoa quebecensis* (Smith, 1900)
* *Euxoa recula* (Harvey, 1876)
* *Euxoa recussa* (Hübner, [1817])
* *Euxoa redimicula* (Morrison, 1875)
* *Euxoa ridingsiana* (Grote, 1875)
* *Euxoa riversii* (Dyar, 1903)
* *Euxoa robiginosa* (Staudinger, 1895)
* *Euxoa rockburnei* Hardwick, 1973
* *Euxoa rufula* (Smith, 1888)
* *Euxoa rugifrons* (Mabille, 1888)
* *Euxoa sabuletorum* (Boisduval, 1840)
* *Euxoa satiens* (Smith, 1890)
* *Euxoa satis* (Harvey, 1876)
* *Euxoa sayvana* Ronkay, Varga & Hreblay, 1998
* *Euxoa scandens* (Riley, 1869)
* *Euxoa scholastica* McDunnough, 1920
* *Euxoa scotogrammoides* McDunnough, 1932
* *Euxoa sculptilis* (Harvey, 1875)
* *Euxoa segnilis* (Duponchel, 1837)
* *Euxoa selenis* (Smith, 1900)
* *Euxoa septentrionalis* (Walker, 1865)
* *Euxoa serotina* Lafontaine, 1975
* *Euxoa serricornis* (Smith, 1888)
* *Euxoa servita* (Smith, 1895) (sometimes misspelled as *servitus*)
* *Euxoa setonia* McDunnough, 1927
* *Euxoa shasta* Lafontaine, 1975
** *Euxoa shasta shasta* Lafontaine, 1975
** *Euxoa shasta condita* Lafontaine, 1975
* *Euxoa sibirica* (Boisduval, [1837])
* *Euxoa siccata* (Smith, 1893)
* *Euxoa silens* (Grote, 1875)
* *Euxoa simona* McDunnough, 1932
* *Euxoa simulata* McDunnough, 1946
* *Euxoa sinelinea* Hardwick, 1965
* *Euxoa spumata* McDunnough, 1940
* *Euxoa stigmatalis* (Smith, 1900)
* *Euxoa stygialis* (Barnes & McDunnough, 1912)
* *Euxoa subandera* Lafontaine, 1987
* *Euxoa taura* Smith, 1905 (syn: *Euxoa cooki* McDunnough, 1925)
* *Euxoa teleboa* (Smith, 1890)
* *Euxoa temera* (Hübner, [1808])
* *Euxoa terrealis* (Grote, 1883)
* *Euxoa terrena* (Smith, 1900) (sometimes misspelled as *terrenus*)
* *Euxoa tessellata* (Harris, 1841)
* *Euxoa tibetana* (Moore 1878)
* *Euxoa tocoyae* (Smith, 1900)
* *Euxoa triaena* Kozhanchikov, 1929
* *Euxoa trifasciata* (Smith, 1888)
* *Euxoa tristicula* (Morrison, 1875)
* *Euxoa tristis* (Staudinger, 1898)
* *Euxoa tritici* – Whiteline Dart (Linnaeus, 1761)
* *Euxoa tronellus* (Smith, 1903)
* *Euxoa unica* McDunnough, 1940
* *Euxoa ustulata* Lafontaine, 1976
* *Euxoa vallus* (Smith, 1900)
** *Euxoa vallus vallus* (Smith, 1900)
** *Euxoa vallus luteosita* (Smith, 1900)
** *Euxoa vallus bivittata* (Smith, 1900)
* *Euxoa velleripennis* Lafontaine, 1987
* *Euxoa vernalis* Lafontaine, 1976
* *Euxoa vetusta* (Walker, 1865)
* *Euxoa violaris* (Grote & Robinson, 1868)
* *Euxoa vitta* (Esper, 1789)
* *Euxoa wagneri* Corti, 1926
* *Euxoa westermanni* (Staudinger, 1857)
* *Euxoa wilsoni* (Grote, 1873)
* *Euxoa xasta* Barnes & McDunnough, 1910
* *Euxoa zernyi* Boursin, 1944

## Gweler hefyd
* Rhestr gwyfynod a gloynnod byw
* Cymdeithas Edward Llwyd a Llên Natur

## Cyfeiriadau
Categori:Gwyfynod