Thread subject: Diptera.info :: Gymnosoma sp 2 Hungary, Balaton
Posted by pwalter on 10-07-2009 23:21
#1
This one was catched,so more photos available. About 7 mm long.
Posted by Zeegers on 11-07-2009 08:29
#2
Do you have a picture more or less from behind ?
Theo
Posted by Jaakko on 11-07-2009 19:23
#3
Theo,
Is there any recent revision from this genus or which literature do you follow?
Thanks in advance!
Jaakko
Posted by Zeegers on 11-07-2009 20:14
#4
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
Posted by pwalter on 12-07-2009 09:42
#5
I hope these photos help:
Posted by pwalter on 12-07-2009 09:43
#6
2
Posted by Zeegers on 12-07-2009 10:23
#7
Well, it is either dolycoridis or clavatum.
I'd need to see the genitalia, that's asking a bit much I'm afraid.
Theo
Posted by Jaakko on 12-07-2009 19:55
#8
Thanks for the advice, Theo.
G. nudifrons is uninspiringly common in Finland and the dusting features given in T&H seem to vary.
Jaakko
Posted by ChrisR on 12-07-2009 21:38
#9
The dusting and thoracic hair features always seem a bit "iffy" to me but I think this is just a "feature" of
Gymnosoma :D 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 :)
Posted by jorgemotalmeida on 12-07-2009 21:41
#10
Gymnosoma spp. are rather common here!!!! And Siphona as well. They are everywhere! :o
Posted by ChrisR on 12-07-2009 21:46
#11
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
Posted by jorgemotalmeida on 12-07-2009 21:50
#12
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! :D That's pure fun. Even worse than catching a hen :o
Edited by jorgemotalmeida on 12-07-2009 21:52
Posted by pwalter on 12-07-2009 23:01
#13
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
Posted by ChrisR on 13-07-2009 08:53
#14
jorgemotalmeida wrote:
Try to catch in midday a bombyliid in the air at 3 m, though! :D That's pure fun. Even worse than catching a hen :o
... and now you see why I don't study bombylids OR hens! ;)
Posted by jorgemotalmeida on 13-07-2009 08:56
#15
lol. Hens are good only for practicing gastronomy. :D
Bombyliids are great! If you were in Iberian or Italy... you would leave tachinids and have much more fun with bombyliids. ;)