Diptera.info :: Identification queries :: Diptera (adults)
Who is here? 1 guest(s)
 Gymnosoma sp
|
|
| amaira |
Posted on 15-06-2010 20:04
|
 Member Location: Stockholm Sweden Posts: 415 Joined: 13.08.06 |
I know they are hard, but I don´t know how hard, so I got some questions. Are there more than 5 Gymnosoma to chose between? (The fice in the gallery) Are all of them parasites on shieldbugs? Is there any possibility for me, to determine some of them, just lookiing at them in my garden? And, of course, is it possible to say which one this is? It is a little bit bigger than I am used to see them. 40 km NW Stockholm Sweden. Picture taken 13 june 2010. amaira attached the following image:  [126.85Kb] |
|
|
|
| ChrisR |
Posted on 15-06-2010 22:23
|
 Super Administrator Location: Reading, England Posts: 7706 Joined: 12.07.04 |
amaira wrote: Are there more than 5 Gymnosoma to chose between? Yes - there are 13 listed in Fauna Europaea but I'm not sure how many would be found in your area - most are quite southerly species so you might have a lot less to choose from  I count 4 or 5 listed for Scandinavia in Tschorsnig & Herting's key but there might be more now. Are all of them parasites on shieldbugs? They are all parasitoids (not parasites) of Hemiptera (possibly not just shieldbugs) Is there any possibility for me, to determine some of them, just lookiing at them in my garden? Sorry, no - most species are very similar and they need very close examination under a microscope. Even with a specimen they can be very difficult.  I'd be happy to try naming some if you sent me specimens though. They usually need examination of genitalia and very close examination of dusting and hairs. And, of course, is it possible to say which one this is? It is a little bit bigger than I am used to see them. It is a female but I'm not sure which species it would be. Theo is usually very reluctant to give names for Gymnosoma in photos but he might be able to see something in this photo that gives him an idea? Chris R. Edited by ChrisR on 15-06-2010 22:27 Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
 |
|
| amaira |
Posted on 16-06-2010 15:01
|
|
Member Location: Stockholm Sweden Posts: 415 Joined: 13.08.06 |
Thank you very very much, Chris! I save the answers in my own "archives". Gymnosoma sp are not so common here, at least I don´t see them often. And I´m not used to kill flies, (without making them flat  ), and that wouldn´t do examination easier, I guess ...
Edited by amaira on 16-06-2010 15:02 |
|
|
|
| ChrisR |
Posted on 16-06-2010 17:27
|
|
Super Administrator Location: Reading, England Posts: 7706 Joined: 12.07.04 |
Hmm, flat would make them a bit too hard to identify I think Gymnosoma are rare here too but with global warming we seem to be getting more phasiines so they might spread and we might get more species from mainland Europe
Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
|
|
|
| Jump to Forum: |