Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

Cassus Roadside-Skipper
Amblyscirtes cassus W.H. Edwards, 1883

Family: Hesperiidae
Subfamily: Hesperiinae
Identification: Fringes are checkered; male forewing has a small dark stigma. Upperside is reddish brown; forewing with a postmedian row of red-orange spots, hindwing with no markings. Underside of hindwing is mottled light and dark gray, and has 2 faint rows of white spots.
Wing Span: 1 - 1 1/4 inches (2.5 - 3.2 cm).
Life History: Not reported.
Flight: One brood from June-September.
Caterpillar Hosts: Grasses including bulb panicgrass (Panicum bulbosum).
Adult Food: Nectar from flowers including Monarda and Asclepius.
Habitat: Open oak woodland, rocky washes.
Range: Arizona and New Mexico south to west Texas and northern Mexico.
Conservation: Not usually required.
NCGR: G3 - Very rare or local throughout its range or found locally in a restricted range (21 to 100 occurrences). (Threatened throughout its range).
Management Needs: None reported.
Comments: NULL