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OK, many thanks Paul. 'elegans' is a perfect name and I too have found records for Corsica of this species, and one looks to have been from higher up the same river based on the map reference. Just to be sure, I've sent a query and the images to a world expert on this group. I can find very few images of Blephariceridae on the internet and none of this species. Some sources say they are a rare group, but they seem to be locally common in fast flowing rivers, so are maybe just rarely collected/photographed! Once ID is 100% confirmed, maybe I should submit some images for your gallery, which has only 3 images fr this group and no thumbnail.