Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

Spiny oakworm moth
Anisota stigma (Fabricius, 1775)

Family: Saturniidae
Subfamily: Ceratocampinae
Identification: Females are larger than males. Upperside is reddish orange with scattered small black specks and faint postmedian lines on both wings. Forewing has a small white cell spot. Males are redder than females. Texas individuals of both sexes are browner.
Wing Span: 1 9/16 - 2 3/4 inches (4 - 7 cm).
Life History: Eggs are laid in clusters of 5-20 and hatch in about 2 weeks. Young caterpillars feed together and when older they feed alone. Fully-grown caterpillars pupate and overwinter in underground chambers.
Flight: One brood; from June-July in the north, July-August in the south, and August-September in Texas.
Caterpillar Hosts: Various oaks (Quercus species).
Adult Food: Adults do not feed.
Habitat: Deciduous woods.
Range: Southeastern Canada; southern New England west to Minnesota, south to central Florida, the Gulf Coast, and central Texas.
Conservation: Not usually required.
NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.
Management Needs: None reported.
Comments: NULL
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