Thread subject: Diptera.info :: Parasyrphus annulatus male -> Syrphus nitidifrons
Posted by Gerard Pennards on 23-05-2008 08:59
#6
Yep, they often have a small facial stripe from mouth edge to facial knob, look at this:
http://pagesperso-orange.fr/cyrille.dussaix/Syrphus_nitidifrons/S.nitidifrons_illus.html