Posted by eklans on 13-05-2021 21:53
#3
Hi Ulrich, I'm quite sure, that the female is B. varipes (the abdomen must be yellow ventrally). Unfortunately I cannot see the colour of the hair on top of the male's thorax - if it's black, it may be the male reticulatus. Bibio are tricky and it's easier if we see dorsal and lateral views.
Greetings, Eric