About Virbia costata Stretch, 1884
Virbia costata Stretch, 1884 is a moth species with measurable sexual dimorphism in forewing length. Male forewings measure approximately 11.7 mm long, while female forewings reach around 13.5 mm long. Adult moths fly in July across Arizona, New Mexico, Colorado, and Oklahoma. In the Big Bend region of Texas, adults are active in flight during June and a second time in early August. The species' larvae have been successfully reared on plantain species.