Posted by pwalter on 19-01-2010 22:16
#1
I have photos from the above mentioned 2 species, both ID-d here. I think it may be useful to show the difference between them. In Hungary, B johannis is far more common. I think they can be distinguished by the metatarsus, for example.
Please correct me if anything is wrong in this!
First, habitus of Bibio johannis male: