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Drilling for hosts II | by johnhallmen
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Drilling for hosts II

Echthrus sp. (probably), Cryptinae, Ichneumonidae

ID-cred: I. Österblad & G. Várkonyi

Size: 8 mm


These wasps find their hosts using echo-localization. They rapidly tap their antennae like drumsticks against the wood surface and the echoing vibrations are then picked up by their slightly enlarged front legs (tibia).


Found and shot at the same location as the previous post. Beavers have been working hard here – hundreds of felled trees (mainly aspens) are providing excellent breeding sites for a large variety of insects.


I found many other interesting species on the very same log (see in the comment below).


Stacked from 6 handheld mixed light (natural light + diffused flash) exposures in Zerene Stacker.


Canon 5DmkII, diffused Canon 270EX, Canon MP-E65 @ 2.4X, 1/60, f/10, ISO400

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Uploaded on January 6, 2015