What's That Bug? does not endorse extermination

Bug found in Canada
Location: Algonquin Park Canada
February 22, 2012 8:00 pm
We took these pictures of an insect in Algonquin National Park in Canada during mid August last year and have been wondering what it is and if it’s giving birth or something.
Please help
Signature: Chris and Maren

Giant Ichneumon Oviposits

Dear Chris and Maren,
This is a positively gorgeous photo of a Giant Ichneumon in the genus
Megarhyssa depositing her eggs beneath the bark of a dying tree.  Another large member of the order of insects that includes bees and wasps, the Pigeon Horntail, has wood boring larvae that are the host insect to the developing larva of the Giant Ichneumon.  We believe your Giant Ichnuemon is Megarhyssa macrurus.  Though the Giant Ichneumons appear to have incredibly long stingers, sometimes as much as five inches in length, the Giant Ichneumon is perfectly harmless and will not sting.  Giant Ichneumons are sometimes called Stump Stabbers.

What's That Bug? does not endorse extermination
Location: Canada

3 Responses to Stump Stabber deposits eggs in dying tree

  1. nathan says:

    hi Chris and Maren,
    this is a Canadian stump stabber. it will not sting you but it could pierce your skin. it will drum its antennas on the dead or decaying wood looking for a grub. then it will insert its “stabber” and inject her eggs into the bug. when the eggs hatch they will eat the grub from inside out. then the babies will go and fly away.
    age: 12

  2. nathan says:

    your welcome

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