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I’ve talked quite a bit about bee-mimicking flies, but flies are also known to mimic wasps.  Here’s an example of a fly that I think does a particularly good job of it…mimicking the constricted waist that is supposedly one of the diagnostic characters of Hymenoptera (wasp-waist).

I think it does quite a good job of looking like a wasp!

I think it does quite a good job of looking like a wasp!  The species is Physocephala tibialis.  It is supposedly a parasite on the bumblebee, Bombus bimaculatus.

But note the halteres, which are fairly obvious in this photo.

But note the halteres, which are fairly obvious in this photo.

IMG_3214

It is visiting Mountain Mint, or Pynanthemum tenuifolium.

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