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Species Idia aemula - Common Idia - Hodges#8323

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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 Herminiinae (Litter Moths)
Genus Idia
Species aemula (Common Idia - Hodges#8323)
Hodges Number
Other Common Names
called Waved Tabby in Europe
Synonyms and other taxonomic changes
described in 1813 by Hubner
wingspan 20-30 mm
Adult: forewing reniform spot large, pale, conspicuously contrasting against ground color of wing; lines thin and not obviously thicker/darker at costa; dark shading in median area (if present) does not touch proximal edge of PM line at inner margin
most of North America and Eurasia
adults fly from May to October in the north; April to November in the south
larvae eat dead leaves
See Also
American Idia (I. americalis) forewing has heavy dark marks along costa
Toothed Idia (I. denticulalis) forewing dark patch in median area touches proximal edge of PM line at inner margin, and reniform spot is small and indistinct (compare images of both species at CBIF)
also see images of ten other Idia species at MPG
Print References
Covell, p. 322, plate 41#12 (1)
Internet References
adult images (Larry Line, Maryland)
live adult image (Lynn Scott, Ontario)
common name reference plus flight season and larval food (Ohio State U.)
distribution in Canada list of provinces of occurrence (U. of Alberta, using CBIF data)