Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

Jalapus Cloudywing
Thessia jalapus (Plötz, 1881)

Family: Hesperiidae
Subfamily: Pyrginae
Identification: Upperside is dark brown; forewing has dark rectangular spots. Male forewing has a costal fold enclosing scent scales. Hindwing is lobed at the rear and has white fringe. Underside of hindwing is dark brown with 2 darker bands.
Wing Span: 1 5/8 - 1 7/8 inches (4.2 - 5 cm).
Life History: Not reported.
Flight: Many broods in Mexico; strays to South Texas in July and September-October.
Caterpillar Hosts: Not reported.
Adult Food: Flower nectar.
Habitat: Tropical forests, especially near streams.
Range: Colombia north through Central America to Mexico. Strays north to the lower Rio Grande Valley, Texas.
Conservation: Not necessary for a rare stray.
NCGR: G4 - Apparently secure globally, though it might be quite rare in parts of its range, especially at the periphery.
Management Needs: None reported.
Alternate Scientific Names:
Achalarus jalapus (Plötz, 1881)