Posted by Klaas on 16-10-2008 10:10
#1
Can diptera be determinated on general appaerence?
More details available
They were feeding and mating on decayed stems of Heracleum sphondyllium - a lot of them.
Posted by Paul Beuk on 16-10-2008 10:27
#2
Correct. Female of
D. febrilis is unmistakable in the Netherlands. Would have been useful to have location and date in case they were not
D. febrilis, though. ;)