Euxoa


Euxoa is a genus of moths of the family Noctuidae erected by the German entomologist, Jacob Hübner.
The genus is mostly confined to dry and semi dry areas in the northern hemisphere. There 130 species in Eurasia, a few in Africa, and 175 in North America. There are no species in the genus in South-East Asia or in Australia. In North America, most species are found in western regions. Of the North American species, four are endemic to Mexico. There is one species recorded from Chile, but this may be a mislabeled specimen.
In real terms, species numbers do not equal species abundance. Some areas with few species have large numbers of the ones that do live there.
In North America there are seven subgenera; Chorizagrotis, Palaeoeuxoa, Heteroeuxoa, Longivesica, Pleuonectopoda, Orstagrotis, and Euxoa.
The larvae of this genus are cutworms, living in the soil but feeding on the surface. A few species also climb. Most larval Euxoa hatch from eggs laid in autumn, and most go through a summer diapause, before pupating when the temperature drops later in the summer.
The genus includes the prolific miller moths, which are full adult army cutworms labeled as the species Euxoa auxiliaris and common in North America. This species is also a crucial late summer food source for grizzly bears in the Greater Yellowstone Ecosystem.

Species

Euxoa aberrans McDunnough, 1932Euxoa absona Lafontaine, 1987Euxoa acuminifera Euxoa adumbrata Euxoa aequalis Euxoa agema Euxoa albipennis Euxoa altens McDunnough, 1946Euxoa anarmodia Euxoa annulipes Euxoa antica Lafontaine, 1974Euxoa apopsis Troubridge & Lafontaine, 2010Euxoa aquilina Euxoa atomaris Euxoa atristrigata Euxoa aurantiaca Lafontaine, 1974Euxoa auripennis Lafontaine, 1974Euxoa aurulenta Euxoa austrina Hardwick, 1968Euxoa auxiliaris - army cutwormEuxoa baja Lafontaine, 1987Euxoa basalis Euxoa basigramma Euxoa beatissima Euxoa bicollaris Euxoa bifasciata Euxoa biformata Smith, 1910Euxoa birivia Euxoa bochus Euxoa bogdanovi Euxoa bostoniensis Euxoa brevipennis Euxoa brunneigera Euxoa camalpa Euxoa campestris Euxoa cana Lafontaine, 1974Euxoa canariensis Rebel, 1902Euxoa cashmirensis Hampson 1903Euxoa castanea Lafontaine, 1981Euxoa catenula Euxoa centralis Euxoa chimoensis Hardwick, 1966Euxoa choris Euxoa christophi Euxoa churchillensis Euxoa cicatricosa Euxoa cinchonina Euxoa cincta Barnes & Benjamin, 1924Euxoa cinereopallida Euxoa cinnabarina Barnes & McDunnough, 1918Euxoa citricolor Euxoa clauda Püngeler, 1906Euxoa clausa McDunnough, 1923Euxoa coconino Lafontaine, 1987Euxoa cognita Euxoa comosa Euxoa cona Euxoa conjuncta Euxoa conspicua Euxoa continentalis Reisser, 1935Euxoa cos Euxoa costata Euxoa crassilinea Euxoa crypta Euxoa cryptica Hardwick, 1968Euxoa culminicola Euxoa cursoria - coast dartEuxoa dargo Euxoa declarata Euxoa decora Euxoa deficiens Euxoa derrae Hacker, 1985Euxoa deserta Euxoa deserticola I.Kozhantshikov, 1937Euxoa detersa Euxoa diaphora Boursin, 1928Euxoa difformis Euxoa dissona Euxoa distinguenda Euxoa divergens Euxoa dodi McDunnough, 1923Euxoa edictalis Euxoa emma L. G. Crabo & A. Crabo, 2007Euxoa emolliensis Euxoa enixa Euxoa eruta Euxoa excogita Euxoa extranea Euxoa fallax Euxoa faulkneri Mustelin, 2000Euxoa fissa Staudinger, 1895Euxoa flavicollis Euxoa flavidens Euxoa flavogrisea Corti, 1932Euxoa foeda Euxoa foeminalis Euxoa franclemonti Lafontaine, 1987Euxoa fumalis Euxoa furtivus Euxoa fuscigera Euxoa glabella Wagner, 1930Euxoa goetria I.Kozhantshikov, 1929Euxoa guadalupensis Lafontaine & Byers, 1982Euxoa hardwicki Lafontaine, 1987Euxoa hastifera Euxoa haverkampfi Euxoa henrietta Euxoa heringi Euxoa hilaris Euxoa hollemani Euxoa homicida Euxoa hyperborea Lafontaine, 1987Euxoa idahoensis Euxoa immixta Euxoa inconcinna Euxoa infausta Euxoa infracta Euxoa inscripta Lafontaine, 1981Euxoa intermontana Lafontaine, 1975Euxoa intolerabilis Euxoa intrita Euxoa inyoca Benjamin, 1936Euxoa juliae Hardwick, 1968Euxoa karschi Euxoa laetificans Smith, 1894Euxoa lafontainei Metzler & Forbes, 2009Euxoa latro Euxoa lecerfi Zerny, 1934Euxoa leuschneri Lafontaine, 1987Euxoa lewisi