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Species Trichordestra rugosa - Wrinkled Trichordestra - Hodges#10302

Wrinkled Trichordestra - Trichordestra rugosa Trichordestra rugosa Wrinkled Trichordestra? - Trichordestra rugosa 10302 Trichordestra rugosa - Trichordestra rugosa genitalia - Trichordestra rugosa - female Wrinkled Trichordestra Moth  -  Trichordestra  rugosa - Trichordestra rugosa Trichordestra rugosa
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 Hadenini
Genus Trichordestra
Species rugosa (Wrinkled Trichordestra - Hodges#10302)
Hodges Number
Synonyms and other taxonomic changes
Lacanobia rugosa
described in 1875 by Morrison, who originally placed it in genus Mamestra
Explanation of Names
RUGOSA: from the Latin "rugosus" (wrinkled)
wingspan about 30 mm, based on photo by Jim Vargo at MPG
Adult: forewing dark brown in upper median area and beyond subterminal line; reniform spot, orbicular spot, and veins in median area outlined in white; broad whitish-gray band across subterminal area, with similar-colored shading in lower AM area and sometimes along inner margin; white subterminal line slightly jagged but lacks W-shaped jog near middle; 3 or more separate dark triangular spots along medial side of subterminal line -- a distinctive feature; pale patch along costa at base of wing; hindwing grayish-yellow with broad blackish terminal band, dark veins, and pale fringe
Newfoundland to Ontario and adjacent northeastern states; also recorded in Alberta
acidic northern bogs
adults fly in June and July
See Also
Trichordestra tacoma forewing has W-shaped jog halfway along subterminal line; Aster Cutworm (T. lilacina) lacks separate dark triangular spots on medial side of subterminal line (compare images of all 3 species at CBIF)
Internet References
pinned adult images and collection site map (All-Leps)
pinned adult image and photos of similar species by Jim Vargo (Moth Photographers Group)
habitat in Alberta; PDF doc (Doug Macaulay, Alberta Lepidopterists Guild)
presence in Michigan and Wisconsin plus locations and dates [search on species "rugosa"] (Lepidopterists Society Season Summary, U. of Florida)
distribution in Canada list of provinces (U. of Alberta, using CBIF data)