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BugGuide Gathering
Pack Forest
Washington State
July 10-12, 2009
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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Flies (Diptera) » "Nematocera" (Non-Brachycera) » Psychodomorpha » Minute Black Scavenger Flies (Scatopsidae)
Photo#287685
black fly pair - male - female
Copyright © 2009 Lynn Bergen

black fly pair - Male Female
Baiting Hollow, Suffolk County, New York, USA
June 12, 2009
There were several pairs of these on a bag of horse manure. All pairs were running fast in a straight line.
I kept watching to see if the one to the rear was able to run so fast backwards or just being dragged along.
I wasn't able to see well enough to tell, they were moving too fast.

Images of this individual: tag all
black fly pair - male - female black fly pair
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Contributed by Lynn Bergen on 13 June, 2009 - 8:21am
Last updated 4 October, 2009 - 11:44pm

Moved
Moved from March Flies.
… John F. Carr, 4 October, 2009 - 9:32pm login or register to post comments

march flies- I think- maybe Bibio genus
I'm not an expert, but it looks like a pair of march flies mating, maybe Bibio genus. Here's a pic of a similar looking fly. The eyes are different on male and female. Males have holoptic eyes. In your pic, it kind of looks like female is on the left/top.
… Andrew Williams, 13 June, 2009 - 10:59am login or register to post comments

 
Not Bibio
At first they look like two Bibio, but (1) they don't have the tibial spurs, (2) they would both be female due to the small heads and eyes.
… John F. Carr, 13 June, 2009 - 11:09am login or register to post comments

 
i get it now
..
… Andrew Williams, 13 June, 2009 - 11:13am login or register to post comments

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