Posted by Piluca_Alvarez on 22-06-2016 13:46
#2
Veeeeeery tricky...
Cannot see well the last sternite but I have a feeling this is a male
Machimus of the
nevadensis group.
Once more the opinion of Reinoud is needed. I am not sure I am interpreting correctly what I see.
Posted by Quaedfliegh on 23-06-2016 00:21
#3
LOL.... There are several things to distinguish M. concinnus from nevadensis (the two are very similar) I can't see enough to be sure. M. concinnus is rather small and usually only has two bristles on the hind margin of the scutellum. I think that is what i see, It should have only one bristle on the underside of F1, i see more : ) But the shape of the hypopygium seems to point more at concinnus again..... My gut feeling is concinnus...(despite the nbr of bristles on F1). CF