New York Natural Heritage Program
Spiny Oakworm Moth
Anisota stigma (Fabricius, 1775)
Spiny Oakworm Moth Jim Vargo
Family: Giant Silkworm and Royal Moths (Saturniidae)

State Protection: Not Listed
The species is not listed or protected by New York State.

Federal Protection: Not Listed

State Rarity Rank: SU
A State Rarity Rank of SU means: Unrankable.

Global Rarity Rank: G5
A Global Rarity Rank of G5 means: Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.

Did you know?
The spiny oakworm caterpillar is just that,very spiny. Fortunately, this species is classified as “non-stinging.” It bears a pair of long, dangerous-looking but harmless spines on the thorax. The spiny oakworm is part of a small group of similarly "horned" caterpillars with two long, curved spines behind the head.

State Ranking Justification [-]
Within New York State, the spiny oakworm moth is known to occur in only one population on Long Island, in dwarf pine barrens in Suffolk County. North of New Jersey, the species is highly habitat specific and is known to occur only in pine barrens and scrub habitats (Wagner et al. 2003; NatureServe 2010). The species is very rare in Pennsylvania and Massachusetts, and it is extirpated or historical from the rest of New England. It might also be very rare in New York State (Schweitzer 1996). However, additional populations might still be found in pine barrens and scrub habitats, and additional surveys are needed to better understand its status and distribution in the state.

Short-term Trends [-]

Long-term Trends [-]