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Giant Ichneumon

Posted by May 27th, 2010 at 10:46 pm

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Ichneumons

Long tailed bug
May 27, 2010
Yellow head and antenae, very long tail. WIngs (two) and rather clumsy. Exploring pansies in planter and will fall off.
M. Temple
New England – Medfield MA

megarhyssa atrata temple 191x300 Giant Ichneumon

Giant Ichneumon

Dear M. Temple,
Many people are shocked or frightened when they encounter a Giant Ichneumon, Megarhyssa atrata, for the first time.  The Giant Ichneumon is a parasitoid insect that preys upon the wood boring larvae of another non-stinging wasp relative, the Pigeon Horntail.  A female Giant Ichneumon, like the one in your photo, locates a wood boring Horntail larva and then drills into the stump or trunk with her five inch ovipositor.  Male Giant Ichneumons do not have an ovipositor.

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