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Species Euxoa olivia - Hodges#10741

Euxoa species - Euxoa olivia 10741  - Euxoa olivia Moth - Euxoa olivia - male Noctuidae: Euxoa edictalis? - Euxoa olivia Noctuidae: Euxoa olivia - Euxoa olivia Noctuidae: Euxoa olivia - Euxoa olivia Noctuidae: Euxoa olivia - Euxoa olivia Euxoa olivia - male
Show images of: caterpillars · adults · both
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 Heteroeuxoa)
Species olivia (Euxoa olivia - Hodges#10741)
Hodges Number
Synonyms and other taxonomic changes
Euxoa olivia (Morrison, 1876)
Phylogenetic sequence # 933318
Forewing length 13-17 mm. (1)
This species can be so variable that has been 'originally' described no less than eight times, and many times by the same author. The form that is most recognizable has the forewing streaked longitudinally with costal, subterminal and posterior areas pale and the transverse lines obscure/incomplete. This form also typically has a pale streak distil to the claviform. In most males the forewing ground color is yellow brown or orange brown; the hindwing is white with brown shading near the terminal line. In most females the forewing ground color is gray or silver gray; the hindwing is pearl gray with the veins darker gray. Another form of this species has the forewings evenly colored with transverse lines prominent and defined in black. (1)

Pacific Northwest Moths considers females of this species to be dimorphic. (2)
Southern British Columbia to southern Manitoba south to northern Texas and west to southern California including southern Arizona and southern New Mexico. (3), (4)
Adults are seen from late August to December. Longer flight in California. (3)
See Also
Euxoa flavidens has a much larger claviform spot
Euxoa auxiliaris - forms of both species with well-defined lines and no noticeable longitudinal streaking can be very similar - see remarks under this image:
Print References
Lafontaine, J.D., 1987. The Moths of America North of Mexico, Fascicle 27.2: p. 36; pl. 1.25-28. (1)
Powell, J.A. & P.A. Opler 2009. Moths of Western North America. pl. 57.19, 57.20; p. 310.(3)
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.
2.Pacific Northwest Moths
3.Moths of Western North America
Powell and Opler. 2009. UC Press.
4.Survey of Utah Moth Species