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Comprehensive Description

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General Description

This group of Dysstroma, consisting of D. citrata, suspectata, walkerata,and truncata, form a complex of species which are often difficult to distinguish without resorting to genitalic characters. D. citrata is usually the most common of the four, and generally flies later in the summer. It is smaller than walkerata, has a paler hindwing than suspectata, and poorly-defined, whitewashed forewing compared to truncata. The brown AM patch at the anal FW margin does not have a well-defined, round border as it does in truncata. The female genitalia are illustrated by McDunnough (1946), which are characterised by a distinctively large appendix bursa.

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Source: University of Alberta Museums

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