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For Insects, Spiders & Their Kin
For the United States & Canada

Species Euxoa infausta - Hodges#10785

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Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Noctuoidea (Owlet Moths and kin)
Family Noctuidae (Owlet Moths)
Subfamily Noctuinae (Cutworm or Dart Moths)
Tribe Noctuini
Subtribe Agrotina
Genus Euxoa
No Taxon (Subgenus Euxoa)
Species infausta (Euxoa infausta - Hodges#10785)
Hodges Number
10785
Size
Forewing length from 14 to 17 mm.
Identification
The form that is most widespread and occurs in the drier more open habitats has a more even buffy to pale grayish brown background color of the forewing. In more forested habitats in Alberta, British Columbia, and western Washington a darker brown/reddish-brown form occurs with a more mottled ground color. In some areas where E. infausta overlaps in range with E. brunneigera excogita an intermediate reddish-brown form with a more prominent prothoracic line occurs which may be hybrids. In the western half of its range there is overlap with E. satis and intermediate forms may occur. E. infausta averages slightly larger than E. satis.(1)
Range
Known to occur in Saskatchewan, Alberta, British Columbia, Washington, Oregon, Idaho, South Dakota, northern Utah, northern Nevada, and California. An apparent disjunct population occurs in the Northwest Territories of Canada.(1)
Habitat
Occurs in mesic forest to dry open habitats.
Season
A relatively long flight period from May to August, with May and June typical in the southern range and July and August typical in the northern range.
Life Cycle
Little known of larval stages.
Print References
(1)
Internet References
Works Cited
1.The Moths of America North of Mexico, Noctuoidea, Noctuidae (Part), Noctuinae (Part-Euxoa), Fascicle 27.2
J. Donald LaFontane. 1987. The Wedge Entomological Research Foundation.