Posted by Darwyn Sumner on 08-07-2007 20:21
#2
I'd be happy with that identification. The general appearance is right for
Neria and the ovipositor sheath typical of
Neria. In
N.cibaria there is a dorsolateral constriction of the ovipositor sheath as your picture illustrates. It's always worth sticking around and looking for a male; the genitalia are much easier to use for identification and there are frequently 2 or more species in the same location.
Email me and I'll send you my key used in our Dipterists Forum workshop recently.