Anisota stigma caterpillars primarily specialize on the foliage of oak (Quercus spp.) trees. Technically polyphagous, researchers have also documented them feeding on several additional plant families, but oaks are their primary host. Adults lack a digestive system, do not eat, and exist solely for reproduction.
Known Larval Food Sources in Indiana
Family
Taxonomic Name
Common Name
Order: Fagales
Betulaceae
Corylus americana
American hazelnut
Fagaceae
Castanea dentata
American chestnut
Quercus spp.
oaks
Juglandaceae
Carya spp.
hickories
Order: Malvales
Tiliaceae
Tilia americana
American basswood
Spiny Oakworm Moth (Anisota stigma) in Indiana
The map, graph(s), and data below represent the Indiana sightings of Anisota stigma as of 13 November 2024, confirmed through photographic evidence by individuals who contributed to the Great American IN Nature Lepidoptera Project (GAIN LP).