Diptera.info :: Identification queries :: Diptera (adults)
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 Gymnosoma sp 2 Hungary, Balaton
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| pwalter |
Posted on 10-07-2009 23:21
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 Member Location: Miskolc, Hungary Posts: 3555 Joined: 06.11.08 |
This one was catched,so more photos available. About 7 mm long.
pwalter attached the following image:  [158.18Kb] |
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| Zeegers |
Posted on 11-07-2009 08:29
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Member Location: Soest, NL Posts: 19009 Joined: 21.07.04 |
Do you have a picture more or less from behind ? Theo |
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| Jaakko |
Posted on 11-07-2009 19:23
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 Member Location: Joensuu, Finland Posts: 479 Joined: 04.08.08 |
Theo, Is there any recent revision from this genus or which literature do you follow? Thanks in advance! Jaakko |
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| Zeegers |
Posted on 11-07-2009 20:14
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Member Location: Soest, NL Posts: 19009 Joined: 21.07.04 |
I follow more or less Zimin, also represented in the russian keys (Bei-Bienko ed.). But I do not recognize all his species. You might try Dupuis as well, but I find it difficult to work with. Moreover, gost-species as G. carpocoridis are not really helping. So in the end, the key by T&H is not bad at all, though take care when you enter the Mediterrean region (rungsi !) According to T (Tschorsnig), the genus is badly in need of a revision. Nearly all ID's from pictures are tentitive, though females nudifrons can be recognized for sure as some clavatum. In the end, most common species are clavatum, rotundatum, nudifrons (and nitens). All others should be treated with care (dolycorides becoming more common to the south). Theo |
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| pwalter |
Posted on 12-07-2009 09:42
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Member Location: Miskolc, Hungary Posts: 3555 Joined: 06.11.08 |
I hope these photos help:
pwalter attached the following image:  [123.13Kb] |
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| pwalter |
Posted on 12-07-2009 09:43
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Member Location: Miskolc, Hungary Posts: 3555 Joined: 06.11.08 |
2
pwalter attached the following image:  [120.01Kb] |
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| Zeegers |
Posted on 12-07-2009 10:23
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Member Location: Soest, NL Posts: 19009 Joined: 21.07.04 |
Well, it is either dolycoridis or clavatum. I'd need to see the genitalia, that's asking a bit much I'm afraid. Theo |
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| Jaakko |
Posted on 12-07-2009 19:55
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Member Location: Joensuu, Finland Posts: 479 Joined: 04.08.08 |
Thanks for the advice, Theo. G. nudifrons is uninspiringly common in Finland and the dusting features given in T&H seem to vary. Jaakko |
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| ChrisR |
Posted on 12-07-2009 21:38
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 Super Administrator Location: Reading, England Posts: 7703 Joined: 12.07.04 |
The dusting and thoracic hair features always seem a bit "iffy" to me but I think this is just a "feature" of Gymnosoma  Most specimens work OK in the key but there are always a few that seem intermediate between 2 species.  And yes, G. nudifrons seemed to be incredibly common in Jari's samples 
Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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| jorgemotalmeida |
Posted on 12-07-2009 21:41
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 Member Location: Viseu - PORTUGAL Posts: 9296 Joined: 05.06.06 |
Gymnosoma spp. are rather common here!!!! And Siphona as well. They are everywhere!  |
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| ChrisR |
Posted on 12-07-2009 21:46
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Super Administrator Location: Reading, England Posts: 7703 Joined: 12.07.04 |
Fill your nets and send them in my direction!!  This week I hope to go in search of the illusive G. rotundatum ... they are very rare here but last year I saw one on a local nature reserve, which would have been a new locality ... but it flew before I could catch it ... doh!! I was in the terrible situation of having to reject my own record!! LOL
Edited by ChrisR on 12-07-2009 21:47 Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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| jorgemotalmeida |
Posted on 12-07-2009 21:50
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Member Location: Viseu - PORTUGAL Posts: 9296 Joined: 05.06.06 |
and tachinids are relatively slow. They are a piece of cake to catch! Try to catch in midday a bombyliid in the air at 3 m, though! That's pure fun. Even worse than catching a hen
Edited by jorgemotalmeida on 12-07-2009 21:52 |
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| pwalter |
Posted on 12-07-2009 23:01
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Member Location: Miskolc, Hungary Posts: 3555 Joined: 06.11.08 |
At my recent trip to Balaton I chased huge locusts for minutes at a field. They always jumped and never to the same direction. I thinked I seemed to be vey drunken for an observer far away. Thanks for the help with these recent Tachinids for everyone, I'll try to preparate genitalia later! By, Walter |
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| ChrisR |
Posted on 13-07-2009 08:53
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Super Administrator Location: Reading, England Posts: 7703 Joined: 12.07.04 |
jorgemotalmeida wrote: Try to catch in midday a bombyliid in the air at 3 m, though! That's pure fun. Even worse than catching a hen ... and now you see why I don't study bombylids OR hens!
Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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| jorgemotalmeida |
Posted on 13-07-2009 08:56
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Member Location: Viseu - PORTUGAL Posts: 9296 Joined: 05.06.06 |
lol. Hens are good only for practicing gastronomy. Bombyliids are great! If you were in Iberian or Italy... you would leave tachinids and have much more fun with bombyliids. |
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