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Digital Guide to Moth Identification

Erebidae 930792 – 8801   Catocala ilia (Cramer, [1775])              Ilia Underwing

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Distribution: See Gall & Borth (2025). Larva and Host Plants: See Gall & Borth (2025). -- Host familiy: Fagaceae.  Host genera: Quercus.  Host extended: specialist on Quercus (Crabo et al 2014); foliage (Wagner 2005).  (Kimberley & Douglas 2025) Similar Species: Pinned specimens of related species. (Hint: select View by Region on the related species page.) Synonymy: ilia (Cramer, [1775]) (Phalaena) - MONA 1983: 8801 ssp. a. ilia (Cramer, [1775]) (Phalaena)  albomacula Butler, 1892 (Catocala)  conspicua Worthington, 1883 (Catocala)  decorata Worthington, 1883 (Catocala)  duplicata Worthington, 1883 (Catocala)  hulsti Reiff, 1920 (Catocala)  iliana Strand, 1913 (Catocala)  normani Bartsch, 1916 (Catocala)  obsoleta Worthington, 1883 (Catocala)  satanas Reiff, 1920 (Catocala)  uxor Guenée, 1852 (Catocala) ssp. b. zoe Behr, 1870 (Catocala)  osculata Hulst, 1884 (Catocala)  reiffi Cassino, 1917 (Catocala)

References (Caution: DNA barcoding at BOLD provides evidence of relatedness, not proof of identification; some BOLD specimens shown may not be sequenced.)

Barcode of Life (BOLD) - Caution: Identifications often erroneous; DNA barcode provides evidence of relatedness, not proof of identification; many specimens not sequenced. Gall, L. & R. Borth, 2025. Underwing Moths (Catocala) & Larvae: A companion guide for iNaturalists, Website. [accessed on 7 October 2025] Powell, J. A. & P. A. Opler, 2009. Moths of Western North America, Pl. 45.5f; p. 261. Book Review and ordering Shropshire, K.J. & D.W. Tallamy, 2025. Lepidoptera of North America, north of Mexico: an annotated list containing geographic ranges and host-plant records. ZooKeys, 1261: 101-113; Suppl. 1. (PDF or read online) Species Page at Bill Oehlke's moth website - Catocala ilia Species Page at Block Island Moths Species Page at BugGuide.Net Species Page at Mass Moths Species Page at Pacific Northwest Moths Species Page at iNaturalist Species page at Moths of North Dakota.

© Bob Patterson © Ken Childs © Lynette Schimming © Mark Dreiling - DNA © Dave Beadle © Mark Dreiling © Nolie Schneider © Patrick Coin © Jerry Armstrong © John Davis © Mike Boone

75mm – © Jim Vargo 70mm – © Jim Vargo C. i. zoe – © Jeffrey C. Miller © Ron Votaw © Ron Votaw

© George Smiley LG © L. Wayne Thompson LG © Teá Montagna LG 5th instar on Quercus rubra © Angella Moorehouse LG © Charles Lewallen © Valerie G. Bugh © Valerie G. Bugh

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