Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

Oslar's oakworm moth
Anisota oslari Rothschild, 1907

Family: Saturniidae
Subfamily: Ceratocampinae
Identification: Females are larger than males. Upperside of female is a uniform brownish yellow; forewing with a small white cell spot. Upperside of male is brownish red; hindwing darker; forewing with a small white cell spot. Neither sex has scattered small black specks.
Wing Span: 2 - 3 3/8 inches (5 - 8.6 cm).
Life History: Adults are day fliers and mate in the morning. Females lay eggs in the early evening in clusters on oak leaves. Young caterpillars feed together, but become solitary as they grow. Fully-grown caterpillars pupate and overwinter in shallow underground chambers.
Flight: One brood from July-August.
Caterpillar Hosts: Various oaks including Mexican blue oak (Quercus oblongifolia) and scrub live oak (Q. turbinella).
Adult Food: Adults do not feed.
Habitat: Oak scrub.
Range: Southwestern Colorado south through New Mexico and southeastern Arizona; extreme east Texas; Mexico.
Conservation: Not usually required.
NCGR: G4 - Apparently secure globally, though it might be quite rare in parts of its range, especially at the periphery.
Management Needs: None reported.
Comments: NULL
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