Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

Gentry's Giant-Skipper
Agathymus gentryi Roever, 1998

Family: Hesperiidae
Subfamily: Megathyminae
Identification: Similar to Bauer's Giant-Skipper but postmedian spot row of orange-yellow spots on upper surface of forewing forms a straight row, and does not in Bauer's Giant-Skipper.
Wing Span: 2 - 2 1/2 inches (5.1-6.3 cm).
Life History: Adults have a noisy, fast flight. From early morning to noon males perch near host plants to wait for receptive females. Eggs are laid singly on the host and fall to the base of the plant. A young caterpillar crawls to a leaf tip and burrows inside where it eats pulp and then hibernates. In the spring the caterpillar makes a new burrow in a leaf base where it feeds on sap until becoming inactive for the summer. Before pupating, the caterpillar enlarges the opening of its burrow and makes a silk trap door from which the adult can emerge.
Flight: Late September to late November (1 flight).
Caterpillar Hosts: Agave deserti subspecies simplex.
Adult Food: Females never feed; males sip moisture from mud.
Habitat: Arid rocky desert mountains ranges.
Range: Southwestern Arizona west to southeastern California.
Conservation: Conserve and manage stands of required caterpillar host plant.
NCGR: G3G4 - Very rare or local throughout its range or found locally in a restricted range OR Apparently secure globally, though it might be quite rare in parts of its range, especially at the periphery. All subspecies are of conservation concern.
Management Needs: No specific needs reported.
Comments: NULL