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Giant Ichneumon

Posted by June 14th, 2008 at 12:00 am

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Ichneumons

hornet-wasp bug
Was about to cut a part of a maple tree down when i was face to face with 10 of these guys, was wondering if you might know what the are. the have long tails that stretch out 4”
Mark

megarhyssa atrata mark Giant Ichneumon

Hi Mar,
This is a female Megarhyssa atrata, a Giant Ichneumon. She is ovipositing, meaning using that stingerlike ovipositor to lay eggs on wood boring grubs that are feeding on the dead and dying wood of your tree. The larval Ichneumon will feed on the wood boring grubs.

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