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Can anyone suggest an ID for this very pretty Nematoceran (I think...) found In Corsica. A bit cranefly like, but very small and delicate, and with some similarities to Blephariceridae (Net-winged midges) with fine creases in the wings and the wing venation does seem to match some genera eg Apistomyia see http://www.metafysica.nl/nature/nomos_16.html ) , but maybe it's of a more common group!

The downward curving abdomen was often flexed up as the flies fed (there were several around), rather like like an ichneumon egg laying. The proboscis looks forked in some images (I have many more)

4th June 2010, c 6mm, feeding on Umbel flowers by a fast flowing mountain stream, c 400m altitude