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Photo#401201
Sepsidae (Black Scavenger Fly)  - Sepsis

Sepsidae (Black Scavenger Fly) - Sepsis
Baiting Hollow, Suffolk County, New York, USA
May 26, 2010
Wing waving display.
Observed on Hosta. Sepsidae?
Similar to this one:

Moved
Moved from Flies.

I agree
Sepsid it is, I think you can put it down as Sepsis sp.

For what it's worth...
Sepsidae looks good to this non expert. :)