Robber Fly
"Hanging Thief"

Diogmites angustipennis

hanging thief by Promontory point
I got out of my car not far from Promontory Point to take a picture of something (I can't remember
what) when a saw a lightning fast insect take another insect right out of the air. I knew immediately
it had to be a robber fly, and I hadn't seen one all day. As soon as I saw the green eyes, I knew that it
was a "Hanging Thief" and  I had only seen them on Antelope Island (and not for two years), I was
 so excited, but afraid that I would never get a picture.
© Carol Davis 8-21-2016

the eyes of the thief
I tried getting close and it flew into a small bush and attempted to hide from me. When I moved in closer
with my little point-and-shoot camera, it took off, dropping its prey,  I thought,
"game over", but it landed
 quite close on an old ant hill.  It moved again and landed on the small plant shown below. After that, it
snatched the little black wasp out of the air and that's when it let me get closer.  It moved again a couple
of times but never so far that I couldn't photograph it well with my telephoto lens. 
© Carol Davis 8-21-2016

hanginging thief standing around
I shot this picture after the fly dropped its first meal. You can see from the first and
second photo how they got the name "Hanging Thief" - they hang with one or
two legs and hold onto their meals with the other legs. I went back to the same
area on the way home, but I couldn't see any robber flies, only freakin'
deer flies who bit my legs the whole time I was taking these photographs.
I just bore the pain as best I could because I was so desperate
for pictures of this beautiful "thief." © Carol Davis 8-21-2016

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