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Lycia ursaria : ウィキペディア英語版 | Lycia ursaria
The Stout Spanworm Moth or Bear (''Lycia ursaria'') is a species of moth of the Geometridae family. It is found in southern Canada and the northern United States, south to New Jersey and Iowa.〔(Bug Guide )〕 The wingspan is about 45 mm. The forewings of the males are broad, evenly grey and heavily speckled with black. There are three black wavy lines on the wing. The hindwings are similar but are more muted in colour. The females have reduced wings and are incapable of flight. For a geometrid, this species has an unusually stout and hairy body.〔(University of Alberta E.H. Strickland Entomological Museum )〕 Adults are on wing from March to June in one generation per year. The larvae feed on the leaves of various broadleaved trees and shrubs, including ''Alnus'', ''Malus'', ''Fraxinus'', ''Tilia'', ''Betula'', ''Vaccinium'', ''Cornus'', ''Ulmus'', ''Crataegus'', ''Populus'' and ''Salix''. ==References==
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