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Photo#274404
Fly - Dilophus

Fly - Dilophus
Sand Springs, Osage County, Oklahoma, USA
May 10, 2009
Size: 4mm (5/32")
This is a very strange looking fly. At first I thought it's abdomen was gone but after looking closer it looks to me more like a dragonfly abdomen....long and thin.

Please help with ID.

Moved
Moved from March Flies.

Yes...
This is a cool image because it is an optical illusion. At first glance, the brain is fooled into thinking that the right leg is attached to the thorax (as the abdomen), while the "real" abdomen is partially hidden under the left wing. In any event, this fly does seem to meet the criteria for the family Bibionidae.

See reference here:
http://bugguide.net/node/view/3834

Maybe a March Fly
Could be Bibio. It seems to have front tibial spurs, but small, and some species have some wing veins unpigmented. But I'm not sure.

 
Dilophus, male
Note also crest of spines on thorax anterodorsally.

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