Thread subject: Diptera.info :: Small flies on fungus, Germany

Posted by Pristurus on 17-11-2014 10:21
#1

found on 2014-09-22 running on fungus in a forest near Marburg. Regards, Ingo

Video: https://commons.w...09-22.webm

Edited by Pristurus on 17-11-2014 10:23

Posted by Paul Beuk on 17-11-2014 16:10
#2

I cannot be certain from these images, but perhaps Acarthophthalmus nigrinus?

Posted by mossnisse on 17-11-2014 17:09
#3

My guess is Chymomyza costata

Posted by Ectemnius on 17-11-2014 17:39
#4

The three backward curving f-bristles and the darkened front margin of the wing point to Acartophthalmus. (without an h after the p, nasty name... :P)
specimens I observed are standing high on the legs like the one shown in the photo and the front coxa are pale, also shown in the above photo's.
Also, they are common on rotting funghi in the early autumn.

So I'd agree with Paul.

Greetings,

Ectemnius

Posted by Pristurus on 19-11-2014 01:05
#5

Thank you very much. Well, I have never seen them on fungi before. Males seem to use the fungi as lek mating arena....