Has Trichina-like antennae and venation (which is very pale) and basal third of hind tibiae twisted. Genitalia large! Never seen anything like this before and cannot key out. Any comments appreciated. Garden, S.Yorks.
Amydroneura gibba. Sorry if my misleading comments wasted anyone's time.
Please note that Amydroneura is a subgenus of Rhamphomyia, so the correct name is Rhamphomyia gibba. Family Empididae, not Hybotidae. Sorry to be pedantic, but this business of names leads to much confusion.
Names are clearly important but in this instance I doubt if anyone would have been unduly confused.