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Many thanks Steve. The only possible image I can find of this is on this site: http://www.diptera.info/forum/viewthread.php?thread_id=18474 of a specimen photographed in croatia which Theo thought might be S. umbrinus, but there was only 1 shot to go on and no specimens. It is recorded from Greece and Turkey according to museum records http://data.gbif.org/datasets/resource/1458/datatracking/ so the location looks good too (Lesbos, though part of Greece, is just off the coast of Turkey). I really should post some of these shots in the gallery as I should for my D. anthracinus pics. I thought i had posted them but find I haven't. Must have run out of steam last time I was posting a big batch of shots!