Once a hornworm has been injected with braconid wasp eggs, its life cycle starts to deteriorate. If you find a hornworm in your tomato patch covered with wasp cocoons, leave it alone. Allow the ...

John E. Woodmansee Photo: Tobacco hornworm on a tomato plant that has been attacked by a parasitic Braconid wasp. The white capsules on its back are the pupal stage of the tiny wasp. Braconid larvae ...