Flower Flies Swarm


A swarm of these insects was in my backyard over the weekend.  They must have “hatched” into adults someplace nearby.

What is it?

It is an Elongate Flower Fly like I posted 2 years ago.  How do we know it’s a fly and not a wasp or bee?  I see a few clues:

  • It has gigantic eyes.  It is amazing how big the eyes are compared to the rest of its body.
  • It has two short antennae.
  • There is a blob (technical term) under the front of the wing.  See it?  These are halteres, which are a second set of wings that are very small- they help the fly balance while flying.



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