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Species Trichordestra lilacina - Aster Cutworm - Hodges#10307

Aster Cutworm - Trichordestra lilacina
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 lilacina (Aster Cutworm - Hodges#10307)
Hodges Number
Synonyms and other taxonomic changes
Lacanobia lilacina
described in 1874 by Harvey, who originally placed it in genus Mamestra
wingspan about 32 mm, based on two photos by Jim Vargo at MPG
Adult: forewing light brown with dark brown or gray patches; claviform spot conspicuous, cone-shaped, brown with black outline; orbicular spot oblique, pale; reniform spot blackish in lower half; some specimens have mostly grayish forewings with white veins (see example); subterminal line pale, slightly irregular, lacks W-shaped jog near middle, and lacks separate dark triangular spots along medial side; hindwing yellowish-gray with dark diffuse terminal band; fringe white or pale yellow
across southern Canada and northern United States, south in the east to New England, south in the west to California
adults fly from June to August
larvae presumably feed on asters (?)
See Also
Wrinkled Trichordestra (T. rugosa) forewing has separate dark triangular spots along medial side of subterminal line; T. tacoma forewing has W-shaped jog in subterminal line (compare images of all 3 species at CBIF)
Internet References
live adult and larva images plus common name reference (Moth Photographers Group)
pinned adult images plus complete description, life history, and PNW habitat, distribution & collection records (Pacific Northwest Moths)
18 pinned adult images and collection site map (All-Leps)
pinned adult images plus photos of related species by Jim Vargo (Moth Photographers Group)
presence in California list of 3 specimen records with dates and locations (U. of California at Berkeley)
distribution in Canada list of provinces (U. of Alberta, using CBIF data)