Diptera.info :: Identification queries :: Diptera (adults)
 Gymnosoma sp?
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| LPCounter |
Posted on 24-08-2009 10:18
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Member Location: London Posts: 26 Joined: 18.08.09 |
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 |
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| ChrisR |
Posted on 24-08-2009 10:22
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 Super Administrator Location: Reading, England Posts: 7703 Joined: 12.07.04 |
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 Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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| LPCounter |
Posted on 24-08-2009 10:31
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Member Location: London Posts: 26 Joined: 18.08.09 |
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 |
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| Jaakko |
Posted on 24-08-2009 10:46
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 Member Location: Joensuu, Finland Posts: 479 Joined: 04.08.08 |
Sorry for the nit-picking, Chris.  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 |
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| Jaakko |
Posted on 24-08-2009 10:50
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Member Location: Joensuu, Finland Posts: 479 Joined: 04.08.08 |
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 |
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| LPCounter |
Posted on 24-08-2009 10:54
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Member Location: London Posts: 26 Joined: 18.08.09 |
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 |
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| tim worfolk |
Posted on 24-08-2009 11:59
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 Member Location: Devon, England Posts: 737 Joined: 05.05.09 |
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 |
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| ChrisR |
Posted on 24-08-2009 12:31
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Super Administrator Location: Reading, England Posts: 7703 Joined: 12.07.04 |
Jaakko wrote: Sorry for the nit-picking, Chris. The bugs belong to Acanthosomatidae...Grrr ... I always hated Hemiptera! 
Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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