Thread subject: Diptera.info :: Dischistus biro or D. senex by D. Gibbs

Posted by Isidro on 22-07-2008 10:14
#1
I like the picture because is nice but I would prefair very much that this fly let me take also a "normal" pic for see the wing venation. Unfortunately it don't let me. So, maybe the genus can't be recognizable, but I try it.

Two days ago. Anz?nigo, Huesca, NE Spain, 600 meters. Small: about 7 mm long (without proboscis).

img28.picoodle.com/img/img28/4/7/22/f_P1010935m_0e77307.jpg

Can be identified?
Thanks.
Regards
Edited by Isidro on 23-07-2008 10:43

Posted by jorgemotalmeida on 22-07-2008 10:20
#2
seems to be Systoechus sp. but I'm not confident. Wish to see the wing venation.

Posted by Isidro on 22-07-2008 10:34
#3
Thanks Jorge. It's a pity that I dopn't had a normal view.

Posted by David Gibbs on 23-07-2008 10:36
#4
Dischistus biro/senex

Posted by Isidro on 23-07-2008 10:42
#5
Wow!!!! Thanks a lot David!!!! I thinket that was impossible with this picture.

Posted by jorgemotalmeida on 23-07-2008 10:51
#6
what is the difference between Dischitus and SYstoechus? I suppose that the former is very whitish with a milky appearance?? And with a longer proboscis. Is it right?

Posted by David Gibbs on 23-07-2008 13:40
#7
jorgemotalmeida wrote:
what is the difference between Dischitus and SYstoechus? I suppose that the former is very whitish with a milky appearance?? And with a longer proboscis. Is it right?


Dischitus- head broader, laterotergite bare, r-m well beyond m-cu

Systoechus- head nattower than thorax, laterotergite haired, r-m and m-cu at same level.

biro and senex are pale grey species, the common Systoechus is a yellow fly (usually-they can fade)