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Photo#126793
Unknown small insect - unable to identify to order let alone family - Trophodeinus - female

Unknown small insect - unable to identify to order let alone family - Trophodeinus - Female
near Republican City, Harlan County, Nebraska, USA
September 20, 2005
Size: 1-2 mm
Several of these insects were collected from pitfall samples next to a reservoir. They are 1-2 mm in length and somewhat laterally flattened (similar to fleas). I believe the tarsi are 5,4,4 and what I think are antennae have plumose hairs. They do not have furcula (therefore most likely not collembola). Sorry the pictures are a little fuzzy - they were taken through a dissecting microscope. Any help in identifying them to order (and family) would be wonderful!

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Unknown small insect - unable to identify to order let alone family - Trophodeinus - female Unknown small insect - unable to identify to order let alone family - Trophodeinus Unknown small insect - unable to identify to order let alone family - Trophodeinus Unknown small insect - unable to identify to order let alone family - Trophodeinus

identification
Thank you so much - I figured it had to be a fly, but I had a friend who thought otherwise. Had I went through the Diptera key - I probably would have figured it out. Again, thank you!

Wingless female Phorid, Trophodeinus sp.
From the family Phoridae, the so called Scuttle flies!
If you take a look in the guide, you can see there are more examples of these wingless flies, for example the genus Puliciphora!
However, I think this is a different genus, most probable would be Trophodeinus. These wingless ones are always females, and of this genus there are two species but only the females are known!
Greetings,

 
Trophodeinus
Hi, Trophodeinus is correct. The males are known, formerly considered genus Bactropalpus Borgmeier, but I synonymized them many years ago.

Brian Brown

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