Posted by Paul Beuk on 20-05-2020 09:43
#2
I think I can just make out the onset of the fork in R
4+5 in the right wing, so that would make it
Empis. Should be near
E. pennipes.
The pennation on the legs serves as a visual trick to enlarge body size and thus suggests high(er) fertility in mating swarms (short version).