bernd heinrich's father was a serious student of ichneumons, and some of that has come through into heinrich's writing as well. obviously they didn't much hold with darwin ;)
That is her ovipositor, with which she places eggs into the bodies of host animals (other insect larvae, usually) which are hiding in burrows in wood. Some wasps have evolved venom glands in concert with their ovipositors, turning this reproductive organ into a weapon. In social wasps and bees (and ants) the workers are sterile females--their ovipositors have turned into non-egg-laying stingers.
Some ichneumon wasps will defend themselves by jabbing an attacker with their ovipositor.
Why are there wasps?dedhamoutdoorsJune 29 2013, 00:20:52 UTC
I just spent about 20 minutes trying to track down the facebook post from a few days ago that I vaguely recall being about Sir David Attenborough's response to a question about wasps. I finally found it - of course, it was you who posted it in the first place.
Ichneumons are a great example of coevolution in action - every time their hosts develop a new evasion strategy, the wasps develop a new way to reach them.
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That's not its stinger, is it?
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Some ichneumon wasps will defend themselves by jabbing an attacker with their ovipositor.
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Someday, if you ever want to write a post on wasps, I would not mind one little bit. *grin*
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