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Fly found inside home, not collected, April 17th 2013, Iberian Peninsula: Catalonia: Beuda, 400 m

First it seemed to me to be Fanniidae, but now i'm not sure. I used Delta keys "the british families of diptera" and them drove me to Fanniidae & Rhinophoridae, but Piluca Alvarez told me it should be Muscidae.

http://www.biodiversidadvirtual.org/insectarium/details.php?image_id=463026

Thanks for helping :-))))

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Piluca is right. ;) This is likely a female Hebecnema (not enough details visible to be sure though).

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Merci, Stephane