Northern Prairie Wildlife Research Center
The underwing genus Catocala includes more than 60 eastern species. Their caterpillars possess elongate bodies, reduced prolegs on third abdominal segment, a subventral fringe of short thickened hairs (setae), and dark spots along venter. Girlfriend underwing gray, vaguely striped with pronounced orange warts on eighth abdominal segment. Top of head often with white and orange spot to each side. Setal bases black on dorsum of thorax; black and orange over abdomen. Fifth abdominal segment slightly humped, often followed by darkened saddle. Fringe hairs sparse, relatively long. Girlfriend underwing part of sibling species complex, the taxonomy of which is presently being studied. Food: especially white oaks. Caterpillar: May to June; 1 generation.