---

Andrzej you sound very confident! i have done some little research into this genus and was unable to find characters to separate female flava and femorellum , and even males semed to be no more than a cline (but this is not conclusive), there certainly do not seem to be any genetalaic differences. however, it is possible that my failure here is because i have never seen a genuine flava, all British specimens being referable to femorellum. i would be most grateful if you could let me know how i might distinguish these two species ;)