Back to discoveries
@fern_dune_99

@fern_dune_99

Pro

Austin, TX

Megalopyge opercularis

Southern Flannel Moth

The primary subject is identified as the larva of the Southern Flannel Moth based on its highly distinctive morphology. The teardrop or slug-like body shape, completely obscured by a dense, uniform coat of soft-looking, tawny-brown setae, is characteristic of this species, commonly known as the puss caterpillar or asp. The location in Austin, Texas, is well within its known range.

Field notes

Narrowly missed being crushed by a dog

Overview

Megalopyge opercularis is a moth of the family Megalopygidae. It has numerous common names, including southern flannel moth for its adult form, and puss caterpillar, asp, Italian asp, fire caterpillar, woolly slug, opossum bug, puss moth, tree asp, or asp caterpillar.

Read source

Observation

Location

Austin, TX

Observed

October, 9:13 AM

Weather

Cloudy, 72F

Shared

October 4, 2026

Also known as

Asp Caterpillar
Southern Flannel Moth
Trumpapillar
Puss Caterpillar

Taxonomy

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Lepidoptera

Family

Megalopygidae

Genus

Megalopyge