About Euclidia cuspidea Hübner, 1818
Euclidia cuspidea, commonly known as the toothed somberwing, is a species of moth belonging to the family Erebidae. This species was first formally described by Jacob Hübner in 1818. It is distributed in North America, with a range extending from Quebec west to western Alberta, north to the Northwest Territories, and south to the Gulf of Mexico. The wingspan of adult toothed somberwings measures 28 to 36 millimeters. Depending on their location, adult moths are active in flight from May to June. The larvae of Euclidia cuspidea feed on a variety of clovers and grasses.