Ichneumonidae Wasps

by Jeffrey S. Pippen | Back to Jeff's Miscellaneous Invertebrates Page | Jeff's Nature Pages

Large family of wasps that do not sting. Most are parasitic (parasitoids) on various insects or other arthropods.
Giant Ichneumon Wasp (Megarhyssa atrata)
Madison Co., NC
9 Apr 2012

These impressive wasps seek out rotting logs where horntail wasp larvae are feeding. Using their antennae they sense the presence of the larvae deep in the log.

Giant Ichneumon Wasp (Megarhyssa atrata)
Madison Co., NC
9 Apr 2012

They then prepare their 3-parted ovipositor to penetrate the log using chemicals which break down the wood, up to 5 inches!

Giant Ichneumon Wasp (Megarhyssa atrata)
Madison Co., NC
9 Apr 2012

During this process, the abdominal membrane is exposed and aids the process.

Giant Ichneumon Wasp (Megarhyssa atrata)
Madison Co., NC
9 Apr 2012

An egg will be passed through the thin ovipositor and onto a horntail larvae. The egg will hatch and the larval Giant Ichneumon will eat the larval horntail.


Giant Ichneumon Wasp (Megarhyssa atrata)
Clay Co., NC
20 May 2007
Giant Ichneumon Wasp (Megarhyssa atrata)
Clay Co., NC
20 May 2007

Subfamily Ichneumoninae
Edge of field and forest in Orange Co., NC
29 May 2008

Subfamily Ichneumoninae
Edge of field and forest in Orange Co., NC
29 May 2008

Subfamily Ichneumoninae
Edge of field and forest in Orange Co., NC
29 May 2008



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Created on ... Nov 6, 2007 | jeffpippen9@gmail.com