Puss Caterpillar (Megalopyge opercularis pupa/cocoon)

Deciduous forests, orchards, and gardens, commonly found on oak, elm, and citrus trees across the southeastern United States and Mexico.

The larval stage feeds on the leaves of various trees and shrubs including oak, elm, sycamore, and citrus; the pupal stage does not feed.

The caterpillar spins a tough, oval, silken cocoon often incorporating its own stinging hairs for protection during pupation. It can remain in this dormant stage for weeks or even months depending on the season.

The cocoon contains extremely venomous, hollow stinging hairs that deliver a painful sting causing rash, swelling, and severe pain if touched. They provide minor ecosystem benefits as occasional prey for specific birds and insects.