Posted by amalia_raluca on 01-05-2007 13:34
#1
I have q question for you. This too species can be separated only by the habitat of their larvae, or there is something more? maybe the male genitalia?
Amalia
Posted by Paul Beuk on 01-05-2007 15:12
#2
Mark van Veen's book on NW European syrphids mentions that they can only be separated on the basis of larval characters.
Posted by caliprobola on 14-06-2009 16:46
#3
On the base of larval/pupal characters and on the base of the host ant. Formica lemani in Microdon mutabilis; Myrmica scabrinodis (and maybe other Myrmica species?) in Microdon myrmicae.