Thread subject: Diptera.info :: Gymnosoma? Cistogaster? -> Gymnosoma costatum
Posted by brigitteu on 26-10-2010 19:07
#1
Hi
is it possible to say somthing about species?
Switzerland, 29.05.2010, 412 msm, near garden and small bitch
Thank you very much,
best regards, Brigitte
Edited by brigitteu on 28-10-2010 20:36
Posted by brigitteu on 26-10-2010 19:07
#2
2
Posted by brigitteu on 26-10-2010 19:59
#4
Hi Jürgen
there are more than Gymnosoma which looks like that? *puh*
Titel is now new with ?
Thank you for your help!
Posted by Juergen Peters on 26-10-2010 20:05
#5
Hi, Brigitte!
brigitteu wrote:
there are more than Gymnosoma which looks like that?
Too much black for
Gymnosoma, I think.
Posted by brigitteu on 26-10-2010 20:23
#6
Cistogaster seems to have shorter antenna?
Posted by Juergen Peters on 26-10-2010 20:40
#7
brigitteu wrote:
Cistogaster seems to have shorter antenna?
You may be right. So let's wait for the experts...
Posted by ChrisR on 27-10-2010 00:27
#8
I'd go with female
Gymnosoma :) But not sure which species. brigitteu was correct -
Cistogaster have smaller antennae ;)
Posted by brigitteu on 27-10-2010 13:39
#9
Thank you Chris for Lady's ID!
Posted by Zeegers on 27-10-2010 21:15
#10
It looks indeed like a Cistogaster but it is a Gymnosoma.
Female Cistogaster are completely black and males much more orange.
Actually, we can identify this Gymnosoma, sometimes you just get lucky ! The frons shows an excellent 'nudifrons' black parafrontal, so this must be Gymnosoma costatum !
Excellent work, guys (male/female)
Theo
Posted by ChrisR on 27-10-2010 21:18
#11
Just for the record how did you split
nudifrons from
costatum in this case? Just from the degree of blackness on the abdomen?
Edited by ChrisR on 27-10-2010 21:20
Posted by brigitteu on 27-10-2010 22:39
#12
Thank you Theo
(I'm happy :-) )
Posted by Zeegers on 28-10-2010 18:41
#13
The degree of blackness indeed and its size, costatum is really tiny.
I know, not much of a scientific argument, but it works here. Nudifrons is pretty big for a Gymnosoma.
Theo