Comprehensive Description

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General Description

The hindwing margin is slightly more scalloped in Hypagyrtis than other similar, mid-sized grey geometrids; it is otherwise difficult to characterize this genus externally without visual comparison to similar species in the Boarmiini such as Aethalura, Iridopsis and Protoboarmia. This genus is taxonomically very difficult, and there are no reliable genitalic differences among piniata and unipunctaria; H. piniata is associated only with conifers in Alberta, and supposedly lacks the brownish shading in the subterminal area found in H. unipunctaria. Piniata females are much smaller than unipunctaria, with a wingspan of about 32mm compared to 38 - 40mm for unipunctaria; piniata males are only slightly smaller than unipunctaria, with slightly less scalloped hindwing margins (Handfield 1999).


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© University of Alberta Museums

Source: University of Alberta Museums

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