Sabre Wasp from UK

Subject: Megarhyssa ?
Location: Petton, Shrewsbury, SY4 5TH
June 3, 2016 6:30 am
Hi, I live just outside Shrewsbury UK, this lovely chap just came into my house long enough for me to take a photo, is it a Megarhyssa and are they native to the UK. We do get quite a few Dragonflies around our pond and at first I thought it was one of them, obviously not – ant ideas?
Signature: Tom Brewin

Ichneumon: Rhyssa lineolata
Sabre Wasp

Dear Tom,
This Ichneumon is not in the genus
Megarhyssa, but rather, we believe it is related to Rhyssa lineolata, a species pictured on BugGuide.  We found Rhyssa persuasoria pictured on Nature Spot where it states:  “It searches for the larvae of Horntails or Longhorn Beetles which have buried in fallen timber. The female then uses her ovipositor to drill down to the larvae and then lay an egg which hatches and parasitize the poor host.” 

Thanks Daniel that’s very helpful, cheers … Tom


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