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Species Page - Hypagyrtis unipunctata |
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Hypagyrtis unipunctata ->species page |
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| scientific name Hypagyrtis unipunctata (Haworth) common name One-spotted Variant habitat Mixedwood forests and aspen parkland seasonality Adults fly in June to mid July. identification 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 species in the Boarmiini such as Aethalura, Iridopsis and Protoboarmia. This genus is taxonomically very difficult, and there are no reliable genitalic differences; H. unipunctaria occurs in the parkland and southern boreal region in Alberta, while H. piniata is associated only with conifers in the north-central region. H. piniata supposedly lacks the brownish shading in the subterminal area found in H. unipunctaria. Treated as H. subatomaria by McGuffin (1977). life history Larvae are mottled grey, and are twig mimics. They overwinter exposed on tree bark and branches, and are important food sources for wintering insectivorous birds in the eastern US (B. Heinrich cited in Wagner et al. 2001). McGuffin (1977) describes the immature stages in detail. Adults come to light conservation Not likely to be of concern in Alberta, although known from less than five records. range Nova Scotia to southern interior BC, south to FL and MS (McGuffin 1977). quick link http://www.entomology.ualberta.ca/searching_species_details.php?s=4209
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