Catocala relicta
Introduction '''''Catocala relicta''''', the '''white underwing''' or '''relict''', is a moth of the family Erebidae. The species was first described by Francis Walker in 1858.It lives in southern Canada, from Newfoundland to Vancouver Island, south to Missouri, and Arizona. ''Catocala relicta elda''''Catocala relicta relicta''The wingspan is 67–75 mm. Adults are on wing from July to September in one generation depending on the location.The larvae feed on ''Betula papyrifera'', ''Carya ovata'', ''Populus alba'', ''Populus balsamifera'', ''Populus deltoides'', ''Populus nigra'', ''Populus tremuloides'', ''Quercus'' species, and ''Salix'' species (including ''Salix eriocephala'').
Subspecies ''Catocala relicta elda'', recorded from Oregon, was formerly considered a subspecies, but is now thought to be a synonym of ''Catocala relicta''.
References
External links **Oehlke, Bill. "''Catocala relicta'' Walker, 1858". ''The ''Catocala'' Website''. Archived December 27, 2008.