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For the United States & Canada
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Genus Caenurgina

Caenurgina sp  moth from New Jersey - Caenurgina Caenurgina crassiuscula Brown Moth in Redmond WA - Caenurgina erechtea White Moth - Caenurgina Moth - Caenurgina Tan Moth - Caenurgina erechtea Caenurgina Forage Looper moth Caenurgina erechtea) ??? - Caenurgina crassiuscula
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 Caenurgina
5 species in North America (
4 species in Canada; only 2 east of Alberta (CBIF)
Scales brushed from terminal end of abdomen in males of C. erechtea and C. crassiuscula.
Represented coast to coast in US and Canada; only 2 species occur in the east (crassiuscula and erechtea)
Due to the similarity in spelling, the genus Caenurgina is sometimes confused with Caenurgia, a genus in the same subfamily and tribe as Caenurgina.

The two species C. crassiuscula - the Clover Looper, and C. erechtea - the Forage Looper are sometimes very difficult to distinguish, and it should be noted that some of the species posted here on BugGuide may well be misidentified, although every effort is made to place them under the correct species. Some specimens are not identifiable from photographs alone.
Internet References
pinned adult images of all four species in Canada (CBIF)