Posted by Sundew on 19-11-2023 04:59
#1
Hi,
A few years ago, we regularly spent a few spring days in Františkovy Lázně (Czechia), and every time I encountered a small dark Dolichopodid there, which turned out to be
Achalcus. Now I checked all relevant threads in the forum archive, and learned from Igor's key (
https://diptera.i...Europe.pdf) that it must be
A. cinereus or
A. thalhammeri. The latter (rather rare) species, which is recorded from Bohemia, has whitish-yellow sternites and dark bristles on thorax and abdomen. I'd like to show you a series of pictures from two years with added notes on the characters of the more frequent
A. cinereus. I strongly suspect that the animals I have observed are
A. cinereus. Confirmation or correction is highly appreciated!
Thanks in advance, Sundew
#1
Edited by Sundew on 19-11-2023 19:43