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Photo#1565599
minute black scavenger fly - Colobostema

minute black scavenger fly - Colobostema
Smithville Park, Burlington County, New Jersey, USA
July 28, 2018
The prey species.
Found on Lonicera morrowii, being preyed upon by a Cerotainia.

Moved
Moved from Flies.

Moved
Moved from Robber Flies.
Sorry, Martin, perhaps I wasn't clear--I am interested in the identity of the smaller fly--I already have an ID for the robber...

 
Sorry Bill, I should have rea
Sorry Bill, I should have read your description much more carefully! The prey is a Scatopsidae, very likely the genus Colobostema. Will move the pic there! Cheers Martin

Moved
Moved from Flies.

Scatopsidae
I don't think any Canthyloscelidae have wing venation like this, but someone else should confirm.

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