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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » "Nematocera" (Non-Brachycera) » Gnats, Gall Midges, and March Flies (Bibionomorpha) » Fungus Gnats and Gall Midges (Sciaroidea) » Dark-winged Fungus Gnats (Sciaridae)
Photo#95637
Flies? - male - female
Copyright © 2007 Jeff Hollenbeck

Flies? - Male Female
St. Lucie County, Florida, USA
February 14, 2007
Size: Female BL 5mm
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Contributed by Jeff Hollenbeck on 17 February, 2007 - 11:09am
Last updated 18 February, 2007 - 6:03pm

...
They are Bibionids, but I do not think they are Plecia nearctica
… Sean McCann, 18 February, 2007 - 6:25am login or register to post comments

 
no, they are sciarids
the wings of these flies do not have the correct venation and their antennae are too long to be bibionids. Let's compare. A sciarid:

both of these flies have the M1+2+3 vein in the middle of the wing forking as a Y. Now trace that vein back. It goes all the way to the base of the wing, it does not come out of a cell or connect to other veins. Bibionids have different venation. look at

See how the y-shaped vein in the middle of the wing comes out of a cell and connects to other veins? Also in these two photographs, notice the length of the antennae. Furthermore, bibionids always have 7 or more 'longitudinal veins,' and Sciarids venation is more reduced, with no more than 6 longitudinal veins. I hope this was helpful.
… Keith Bayless, 18 February, 2007 - 4:22pm login or register to post comments

Love Bugs
Those appear to be love bugs (not sure what the techical name for them is but they are a nuisance here in Savannah in the spring).
… Sheila , 17 February, 2007 - 5:54pm login or register to post comments

Sciaridae
can't help you with the genus, though
… Keith Bayless, 17 February, 2007 - 12:14pm login or register to post comments

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