| Life history/immatures | | |
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| Phenology (central Illinois) | Early (larva from 14 April to 7 May, adult from 5 May to 24 May) | Late (larva from 13 May to 7 June, adult from 30 May to 21 June) |
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| Color of final-instar larva (Figs. 1B, 2B) | Reddish brown with blackish head; pinacula of most primary setae brown, inconspicuous | Dull green with orange head; pinacula of most primary setae black, conspicuous |
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| Male genitalia | | |
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| Vinculum (Figs. 5A–C, 6A–C) | Asymmetrical, with broad ventral keel on left margin, no keel on right margin; a narrow independent keel running diagonally between the two margins; free anterior part in lateral aspect appearing as a loop | Symmetrical, with narrow ventral keel on left margin identical to that on right margin; no independent keel between margins; free anterior part in lateral aspect appearing as a single slightly curved line |
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| Valva (Figs. 5B–C, 6B–C) | Relatively broad, width 0.13X to 0.24X length | Relatively narrow, width 0.06X to 0.15X length |
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| Gnathos (Figs. 5D–E, 6D–E) | Medial region relatively small, pointed; subapical sharp projection visible in lateral aspect | Medial region relatively large, rounded; no subapical projection visible in lateral aspect |
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| Phallus (Figs. 5F–G, 6F–G) | Relatively narrow, apex acuminate; strongly doubly curved in ventral aspect | Relatively broad, apex truncate; straight in ventral aspect |
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| Female genitalia | | |
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| Posterior margin, tergum 8 (Figs. 7B–C, 8B–C) | Narrowest laterally, broadening gradually to widest point at midline | A narrow transverse band laterally, broadening abruptly into large rounded medial projection |
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| Ductus bursae (Figs. 7D, 8D) | Not enlarged at base | Bulbously enlarged at base |
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| Corpus bursae (Figs. 7E–F, 8E–F) | Wall smooth; microtrichia relatively long and sparsely distributed | Wall foveolate; microtrichia relatively short and densely distributed |
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