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Giant Ichneumon

Posted by March 10th, 2006 at 1:00 am

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Ichneumons

Wood boring bug?
Dear Bugman,
I am interested in finding out what this bug is. Our local elementary school science teachers cannot name it. We found it in Northern Lower Michigan in the fall. Around the Lake City area. I have looked at ALL of the bugs on your website but have not seen this one. Please help.
Thank you.
Robert E.

megarhyssa atrata robert Giant Ichneumon

Hi Robert,
Look again because we have an entire page devoted to Ichneumons. This is a Giant Ichneumon, Megarhyssa atrata. It is not a wood boring insect, but a parasite on wood boring grubs. The female, which you have photographed, uses her long ovipositor to lay eggs deep inside wood infested with horntails and other boring insects.

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