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Photo#111130
Mating Flies - Toxomerus geminatus - male - female

Mating Flies - Toxomerus geminatus - Male Female
Reed Turner Woodland Nature Preserve, Lake County, Illinois, USA
May 16, 2007
Size: ~9mms

Moved
Moved from Toxomerus.

Toxomerus geminatus
See:

 
Aaaarrgggh!
TThhee ssaammee mmiissttaakkee ttwwiicee!!

=:(
=:(

Toxomerus, probably politus
According to the Toxomerus guide page, no yellow margin eliminates Toxomerus marginatus, and the dark scutellum with a yellow border probably makes it Toxomerus politus.

Of course, that simplified key doesn't allow for about a dozen rare species, but I'll leave that to the actual experts

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