Virbia fragilis

Virbia fragilis is a moth in the family Erebidae. It was described by Strecker in 1878. It is found in open fields in the Black Hills in South Dakota and in Boulder, Colorado. The range extends north to Alberta and British Columbia and south to New Mexico.

The length of the forewings is about 14 mm for males and 12 mm for females. The male forewings are clay with cinnamon scales. The hindwings are flesh ocher. The female forewings are cinnamon from the base to the postmedial region. The costal margin is peach red and the terminal margins are fringed with dark salmon scales. The hindwings are peach red with a brown discal spot and brown subterminal markings. There is one generation per year with adults on wing in July.