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Caterpillars and braconid wasps

FILE - A lappet moth caterpillar carrying braconid wasp cocoons.
Guido Bohne
/
Wikimedia
FILE - A lappet moth caterpillar carrying braconid wasp cocoons.

Rudy Mancke discusses how certain parasitic wasps use caterpillars to host their eggs.

Transcript (edited for clarity):

RUDY MANCKE:

Hi, this is Rudy Mancke from USC for NatureNotes.

Victoria was at Jones Gap State Park near Marietta, SC — you know, the Saluda River, one part of it runs through there — with her granddaughters. And on the side of a small boulder, they noticed something that really was sort of different than the boulder underneath it. When they look closely, it looked like a caterpillar. And from what I saw in the, in the photo, I think it was probably one of the tussock moth caterpillars.

But there were projections off the caterpillar's body that made it look pretty weird. Those were wasp pupil cases. There was a parasite inside. Braconid wasps do that: feed on non-essentials, then chew your way out, kill your host, and then become wasps.

Strange world.

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Rudy Mancke served as naturalist and co-host of South Carolina ETV's <i>NatureScene</i>, which began its long run in 1978. His field trips, broadcast nationwide, earned him a legion of dedicated viewers. Rudy's knowledge of the complex inner-workings of different ecosystems and his great admiration for the natural world make him the perfect guide. In fact, the National Wildlife Federation and the Garden Club of America honored his commitment to resource conservation with special awards. After retiring from SCETV, Rudy went on to become naturalist-in-residence at the University of South Carolina, Columbia. He hosted SC Public Radio's <i>NatureNotes</i> from 1999 until his death in 2023 at age 78.