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Hello!

The most numerous Diptera at the moment here in Ostwestfalen/Germany are the dancing winter midges. Often the dance obviously was successful:





This pair even did not let disturb themselves by a passing spider (Macrargus rufus male - also seeking for a mate and just as uninterested in the potential easy prey):
http://insektenin..._rufus.jpg

Is it possible to tell the Nematocera family? Maybe Trichoceridae (the size would fit)? Thanks in advance!

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I think yes, Trichocera sp.
On your first photo diagnostic vein A2 fastly curving to wing margin is good visible.

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Hello!



Thanks, Nikita!