Sweeping in my garden in Wiltshire yesterday, 9th March, I caught a female Simuliid which I'd like to identify. Is there a reliable key to the British Simuliidae? Comparison with pictures posted on Diptera Info suggests the genus Simulium, but I'd like to do better then that. I have attached two imperfect photographs. Any help or pointers to a key would be appreciated.
AFB. I posted a reply about a week ago, but for some reason it has not appeared. Try again! The most complete keys are the Lewis Davies (1968) ones. BUT they are very difficult to use even for someone with experience. female blackflies are very similar. Also many species have been renamed since.I would advise you try the keys in R W Crosskey (2005) A perspective on anthropophilly in British Blackflies, with keys for the identification of the culprit species. Dipterists Digest Vol 12 No. 1 pp 29-58. If you don't know it it should be available in your local main library. If you cannot find it, email me at firstname.lastname@example.org and I will photocopy the relevant pages for you. As it says, this is for man-biting species, but you may be lucky. Good luck! jaybeedee.