IUCN threat status:

Not evaluated

Comprehensive Description

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General Description

A medium-size (3.5-4.0 cm wingspan) moth with two color-forms, dark-brown or grey. The grey form, most common early in the season, is light grey with little mottling, shading to dark brown in the lower half of the forewing, between the antemedian and postmedian lines and in a band from the apex to the outer lower margin. The brown form is dark red-brown over most of the forewing except for a paler grey brown area at the wing base and along the outer margin. Stigma is a curved silver bar, rounded on the outer end, with a short spur on the upper arm. The lower arm continues as the lower half of the antemedian line. Hindwings in both forms are light red-brown, with a distinct narrow postmedian band and shading to a wide dark terminal band. The antennae are simple and boht the sexes are alike.

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© University of Alberta Museums

Source: University of Alberta Museums

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