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Photo#732081
Fly or Wasp? - Eupeodes volucris - female

Fly or Wasp? - Eupeodes volucris - Female
Rowland Heights, LA County, California, USA
December 18, 2012
I have always been curious. Is this a wasp or a fly. Its behavior is like a fly but its colors make it look like a wasp. Is the coloring due to Bastian mimicry or can it really sting you? Please tell me its ID:)

Moved
Moved from Syrphid Flies.

ID: Eupeodes volucris
Female

Fly or Wasp?
If you can count the wings, flies are the only insects with just two (not four) wings. Hence, diptera for two wings. Often, it's easier to look for halteres, which only flies have. You can barely see one here - it's the small round shape on the right side of your fly where the thorax and abdomen intersect. (You'll find more about bug parts at the Bug Guide glossary, or via an internet search.)

Look at eyes and antennae for flies and wasps and you'll see more differences. Antennae can be misleading, due to mimics as you've mentioned.

BTW, while I don't cozy up to Yellowjackets, I have never had a problem with a wasp in the field, including a bunch of huge tarantula hawks I dislodged from a tree branch with my balding head!

Moved for expert attention
Moved from ID Request.

No sting. :)

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