Posted by Axel D on 04-07-2022 13:17
#1
Hello
I caught this fly 2 days ago in a alkaline fen. It is an
Ogcodes and to know the species I tried to use
Faunistik und Taxonomie der Acroceriden (Diptera) der Schweiz by M. Weinberg and G. Bächli.
I think I'm not wrong if I say it's a male. I mainly hesitate between
O. gibbosus and
O. zonatus but I think it is more likely to be the first species. I don't know if the halter is white enough for
gibbosus and I'm not sure to well inderstand the part about "Schüppchenrand". But the legs color doesn't match with
pallipes I think and the hind femora et tibias are too straigh for a male
zonatus.
What do you think about this fly ? I can do other pictures of the fly if necessary.
Found in "Marais d'Episy", Moret-Loing-et-Orvane, Seine-et-Marne, Île-de-France, France
On the 2nd of July 2022
Body length : 6 mm
Edited by Axel D on 06-07-2022 15:31
Posted by Zeegers on 05-07-2022 22:25
#5
Yes, I agree. Pallipes is much darker tergites. Yellow halter clearly supports gibbosus.
Well documented !
Theo