Posted by nomad on 08-08-2016 16:54
#1
Switzerland, Canton of Valias, Rossbodental Valley, 1500 meters. Early July 2016. Grassy clearing in pine forest.

Posted by Gerard Pennards on 15-08-2016 13:06
#4
Yes, Chrysotoxum male. But I think it's more likely to be C. arcuatum.