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In the Pyrenean Aragonese, Northern Spain (1900 meters of altitude).

I found a rock completely covered with Acroceridae. There would be a hundred of flies.

Most of the females had two, three, four and up to five males upon them. Also there was a great number of single individuals.

On near rocks, very seemed, there was no fly. It seemed a nuptial meeting. At noon, with a sun very hard (bad for the photography).

I have about 25 photographies, It's possible that if I know what characters are importants for the identification, I can upload some photo.







thx