Thread subject: Diptera.info :: A fly.
Posted by Nikita Vikhrev on 12-10-2005 19:53
#1
10 okt, Moscow city, park, on fallen leaf, 4-5mm.
Costal break with seta, arista, red eyes - like Drosophilidae.
But I very doubt in this - too strong setae on thorax, too thin abdomen, too black-grey body colour. And fly acted like Sepsidae or some Janwillemomiidae...
Posted by Paul Beuk on 12-10-2005 21:57
#2
It is a species of
Campichoeta, family Campichoetidae. I will have to check which one.
Posted by Nikita Vikhrev on 12-10-2005 22:47
#3
Than Drosophiloidea (=Ephydroidea), and the very small family!
Thank you very much Paul!
P.S. Acting like Opomyzidae or Sepsidae also mean (for my expirience) to leave inside same squaire meter during long time even slightly disturbed. So I have a lot images from different points. Let me know, please, if you'll need some additional images for ID.
Posted by Jan Willem on 12-10-2005 22:56
#4
Hi Nikita,
So you were close with your remark that is looked like Drosophilidae. Have a close look at the bristles on the frons at the eye margin.
A. F bristle that is bend forward is not closer to the eye margin than closest backward bended F bristle =>
Drosophilidae
- F bristle that is bend forward closer to the eye margin than closest backward bended F bristle =>
B
B. Arista pubescent; one break in costal vein =>
Campichoetidae
- Hairs on arista short or middle long; two breaks in costal vein =>
Diastatidae
Maybe this will be of some help!?
Jan Willem
Edited by Jan Willem on 12-10-2005 22:57
Posted by Nikita Vikhrev on 12-10-2005 23:16
#5
Thank you Jan.
During the observation of Campichoeta I was in doubts - is it yours fly which I have to collect or not. Campichoeta decided to be not collected and vanished. And there was only one of a kind...
Nikita
Posted by Kahis on 13-10-2005 11:23
#6
I would vote for
Diastata (Diastatidae), possibly
D. costata.
The
Campichoeta species I've seen are less robust and have quite small male genitalia.
Edited by Kahis on 13-10-2005 11:24
Posted by Paul Beuk on 13-10-2005 11:31
#7
LoL, I was thinking of
Diastata/Diastatidae and wrote
Campichoeta/Campichoetidae. My first suspicion was probably
Diastata costata, so I do not know how and when the other genus and family krept into my mind. Probably because they were once in the same family. Ah well, as long as we get the right name in the end... :)
Posted by Jan Willem on 13-10-2005 16:45
#8
On the first photo there seems to be a rather distinct dark band along the costal margin, which would fit perfectly with
Diastata costata (although this band is not always very distinct). So I agree with Kahis but would replace "possibly" by "probably".
Jan Willem
Posted by Nikita Vikhrev on 13-10-2005 19:15
#9
I'd rather add two more images. May be it helps to illiminate both "possibly" and "probably".
