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Syrphid Fly - Xylota

Syrphid Fly - Xylota
Lacey (near Olympia), Thurston County, Washington, USA
July 8, 2007



Moved from Flies.

Belongs to the Xylotini, and the genus is Xylota or Chalcosyrphus!

xylota vs. chalcosyrphus
Thanks for the assist, Gerard.

Little confusing though: I checked out both xylota and chalcosyrphus in the guide, and there is one of each both from a fellow in Massachusetts that look almost identical to my fly!

Hello Kevin,
Yes, that is exactly why it is very difficult, if not impossible, to give such a fly a name from a picture. The differences between these two genera are normally just visible under a microscope.
The general appearance is good enough to tell it's Xylotini, but normally it stops there!

flies vs other insects
I'm new to this, so pardon if this is a really dumb question: Is it just the 4 pics I've sent in (one which *nobody* has taken a stab at), or are flies in general a tough group to key out compared to other insects?

Thanks again for your help and wisdom, Gerard.

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