The puss moth is one of the largest moths, with an average wing span of 2.3 to 3 inches. ... The southern flannel moth caterpillar (Megalopyge opercularis) is round and covered in fluffy brown fur. This caterpillar is highly poisonous to humans. Its sting can cause severe skin rashes.

What happens if a puss caterpillar stings you?

(Asp Stings)

When a puss moth caterpillar rubs or is pressed against a person's skin, its venomous hairs are embedded, usually causing severe burning and a rash. Pain usually subsides in about an hour. Occasionally, the reaction is more severe, causing swelling, nausea, and difficulty breathing.

Why is it called a puss moth?

A large white or greyish-white furry moth, the Puss moth is named after the cat-like appearance of the adult. The female is generally larger and also differs in having a grey hindwing and sometimes forewing. Eggs are laid singly, or in twos or threes on the uppersides of leaves.