Cocoon (right) of parasitic wasp, Hyposoter exiguae, and the cuticle (skin) of caterpillar it killed.

Hyposoter cocoon with remains of armyworm skin, 2X; . Credit: Jack Kelly Clark
Cocoon (right) of parasitic wasp, Hyposoter exiguae, and the cuticle (skin) of caterpillar it killed. Credit: Jack Kelly Clark