Thread subject: Diptera.info :: Gymnosoma sp?
Posted by LPCounter on 24-08-2009 10:18
#1
Found laying eggs on adult Parent bugs - I'm not sure which Gymnosoma sp this is?
Thank you
Edited by LPCounter on 24-08-2009 10:36
Posted by ChrisR on 24-08-2009 10:22
#2
That's because it isn't a
Gymnosoma - it looks more like
Subclytia rotundiventris to me - also a parasitoid of Pentatomidae :)
Excellent "action" shots - please submit them to the gallery :)
Edited by ChrisR on 24-08-2009 10:24
Posted by LPCounter on 24-08-2009 10:31
#3
ChrisR wrote:
That's because it isn't a Gymnosoma - it looks more like Subclytia rotundiventris to me - also a parasitoid of Pentatomidae :)
That's excellent - I was really struggling with this one! Thanks Chris :)
Posted by Jaakko on 24-08-2009 10:46
#4
Sorry for the nit-picking, Chris. B) The bugs belong to Acanthosomatidae,
Elasmostethus sp. Location and the host plant might help. I agree with the tachinid ID and the hosts fit as well. Excellent photos!
Jaakko
Edited by Jaakko on 24-08-2009 10:47
Posted by Jaakko on 24-08-2009 10:50
#5
Btw. Did you make any observations where the eggs were laid? Abdomen, ventral/dorsal? One per host?
S. rotundiventris lack piercers, so should be easy to spot.
Jaakko
Posted by LPCounter on 24-08-2009 10:54
#6
The fly was only interested in the adult Parent bugs (Elasmucha grisea) - you can see an oval shaped egg near the top of the pronotum of two adults in the first photo. One egg per bug!
The bugs were on birch in North London.
edit - here is a good example of a single egg on a Hawthorn Shieldbug nymph found on the same birch tree.
Edited by LPCounter on 24-08-2009 11:54
Posted by tim worfolk on 24-08-2009 11:59
#7
I've got to agree with LPcounter on the ID of the bug;
Elasmucha grisea based on obvious banding on connexivum (lateral edge of abd.).
Tim
Posted by ChrisR on 24-08-2009 12:31
#8
Jaakko wrote:
Sorry for the nit-picking, Chris. B) The bugs belong to Acanthosomatidae...
Grrr ... I always hated Hemiptera! ;)