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General Description

Easy to recognize by its size and distinctive forewing pattern. The forewing is white to light grey with variable brown shading in the lower median and basal areas. A large black triangle is present at the middle of the costa that is interrupted by a narrow line just before the postmedian area. The head and thorax is concolorous with the forewing and the latter has small paired tufts near the wing bases. The larva is completely greenish except for a small dark spot amongst the eyes, faint dark green speckling on the anal shield, and rarely dark edging to the thoracic shield (Chapman & Lienk 1971, MacKay 1962).


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© University of Alberta Museums

Source: University of Alberta Museums

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