Comprehensive Description

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General Description

This species and the Margined White (P. marginalis) are very similar. The Mustard White has well-marked, narrow and dark green markings along the veins of the hindwing underside, not broad, diffuse, and greyish-green as in marginalis. The second (summer) brood of oleracea often has these markings faint or absent. These two species occur together only in the foothills region. Alberta populations are the nominate subspecies (Layberry et al. 1998).

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© University of Alberta Museums

Source: University of Alberta Museums

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