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Hi Folks,
Sweeping over a little stream today netted me 9 species of flies, 1 species of weevil and a collembolan, the flies included a male and a female of this, which to me, has a rather unsual venation (I am referring to the cross vein that doesn't go anywhere). I am hoping that someone will recognise it from this rather poor photo, mobile phones were not made for photographing down microscopes. I took a habitus photo as well, but it doesn't show much but a silouette. Could it be an opomyzidae he said guessing wildly.

My thank to anybody who replies.