Comprehensive Description

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General Description

A medium-size (3.0-3.6 cm wingspan), dark brown moth. The forewings are dark grey-brown with a scattering of lighter brown scales. The normal lines and spots are absent or greatly reduced. The only prominent mark is the silvery white stigma in the center of the forewings. This is comprised of a u-shaped mark with a silvery spot just distad of the base of it, nearly or just touching it. The upper part of the postmedian line is reduced to a series of thin, black streaks or loops. The terminal line is marked with a series of black crescents following the scalloped wing margin. The hindwings are dark sooty brown, paler in the basal half and darkening toward the margin. The fringe is pale, with brown scales marking the ends of the veins. The antennae are simple, and both sexes are alike.


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© University of Alberta Museums

Source: University of Alberta Museums

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