What is happening with this (now dead) caterpillar that Karla Salathe photographed in South Sutton, New Hampshire? Bonus question, what type of leaf is it on?
Answer
The caterpillar is covered in wasp pupae. A wasp laid eggs in or on the caterpillar and the larvae developed inside the caterpillar. Usually the caterpillar stays alive throughout the larval stage, assuring a supply of fresh meat. Oh, and the leaf is a grape leaf.
This week’s contest winner was Stephanie Radner