Posted by Andrius on 17-11-2007 22:51
#2
Well, back in July of 1997 I've seen such gathering of Athericidae (don't know what species was it) in Southern Lithuania. The heap of flies was also on the trunk of tree leaning over the stream. And this is the only time I've seen such a thing...
Edited by Andrius on 17-11-2007 22:53