Touch a venomous asp caterpillar; get ready to scream

  • Amanda O'Donnell, Austin American-Statesman
5:37 p.m Thursday, Oct. 19, 2017 Austin360 Home
Arterra/UIG via Getty Images
A colorful swallowtail caterpillar crawls along a tree branch. Its cousin, the venomous asp caterpillar, packs a particularly painful sting, if touched.

An asp caterpillar, also known as the southern flannel moth caterpillar, found mostly in Texas, Florida and Louisiana, delivers a painful punch, if you touch it.