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Species Euclidia cuspidea - Toothed Somberwing - Hodges#8731

Moth - Euclidia cuspidea Day flying moth - Euclidia cuspidea Euclidia cuspidea Turtle Mtn. - Euclidia cuspidea Euclidia cuspidea Moth - Euclidia cuspidea Lepidoptera - Butterflies and Moths - Euclidia cuspidea Mystery moth - Euclidia cuspidea
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 Erebidae
Subfamily Erebinae
Tribe Euclidiini
Genus Euclidia
Species cuspidea (Toothed Somberwing - Hodges#8731)
Hodges Number
Synonyms and other taxonomic changes
Euclidia cuspidea Hübner, 1818)
Phylogenetic sequence # 930929 (1)
Lafontaine & Schmidt (2010) listed two species of the genus Euclidia in America north of Mexico. (1)
Forewing length 15–18 mm. (2)
Adult - forewing purplish-gray and brown with distinctive black PM triangle, basal and apical spots, and AM band; hindwing yellowish-brown with two blackish lines and basal shading. [description by Charles Covell]

Larvae - slender and cylindrical, brown with fine longitudinal striation, forming subdorsal, stigmatal and subventral bands, with the stigmatal stripe comprised of four striae and running onto the side of the head. (Forbes, 1954)
Quebec west to western Alberta, north to the Northwest Territories and south to the Gulf of Mexico. Cuspidea is replaced in BC by the very closely related and similar appearing E. ardita (E.H. Strickland Entomological Museum) [Randy Hardy]
Grassy wooded edges, clearings and mesic meadows with long grass. (E.H. Strickland Entomological Museum)[Randy Hardy]
The main flight period appears to be March to August. (3)
The larvae feed on clover (Trifolium sp.) and grasses (Graminiae) (Forbes, 1954); also reported to use sweetfern (Comptonia sp.) and lupine (Lupinus sp.) (Covell, 1984).
Life Cycle
Unusual in that the adults are active both during the day and the night, and are attracted to light. They also come to sugar bait (Handfield, 1999). There appears to be a single annual brood. (E.H. Strickland Entomological Museum)[Randy Hardy]
In flight Euclidia greatly resemble skippers of the genus Erynnis; they flush from the ground and fly rapidly for 20 meters or so before dropping back to the ground. (E.H. Strickland Entomological Museum)
See Also
Euclidia ardita a western species.

Caenurgina species and Drasteria species are superficially similar but have a different pattern on the forewing