What does a Catawba worm?

Catawba worms are actually catalpa sphinx caterpillars (Ceratomia catalpae), and they are capable of defoliating a large catalpa in a relatively short period of time. This often happens in the heat of the summer between mid-June and the 4th of July.

What is the life cycle of a Catawba worm?

There are four life stages: egg, larva, pupa, and adult.