Thick-headed Fly
Physocephala texana

 thick-headed fly
This beautiful parastitic insect is a Thick-headed Fly that I found on Antelope Island.  They lay their eggs in
the abdomen of stinging insects.  According to Wikipedia, they do this as they are flying--similar to an Air Force
refueling maneuver but with dire consequences.  The eggs hatch and the larvae feed inside the host.  Thankfully,
the adult thick-headed flies feed on nectar and that's when we get to see them parading around in bee-like attire,
looking all gussied-up for photographers.  Carol Davis, 6-22-2008

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