Thread subject: Diptera.info :: Acroceridae - Ogcodes pallipes? NE HU, 07.2010
Posted by pwalter on 18-09-2010 16:51
#1
Hi, I think this keyes out as Ogcodes pallipes. On a dry meadow, 07.2010. Can someone help?
Posted by pwalter on 18-09-2010 16:52
#2
2
Posted by pwalter on 18-09-2010 16:54
#3
3
Posted by pwalter on 18-09-2010 16:54
#4
4
Posted by jorgemotalmeida on 18-09-2010 17:21
#5
wow! A beauty. How I would love to have this specimen. Walter, at the moment, the Ogcodes genus is in a mess... but so far there is no one that is studying this genus neither even Dra. Emilia. I'll try to dig out later the keys, if possible (busy now).
Posted by Jaakko on 18-09-2010 23:50
#6
Are the halters pale? If so, should be
O. gibbosus. This looks fairly typical
gibbosus, what comes to the descriptions in Lidner (by Pius Sack).
Thereīs a world revision of
Ogcodes by Schlinger (1961) in the Proceedings of the United States National Museum 111:227-336. Besides Lidner, the Chvala, M., 1980a. Two new European Ogcodes species (Diptera, Acroceridae). Acta ent. bohemoslovaca 77, 131-137. is a good reference for the genus.
The "mess" is not as bad with the Palearctic species, but the trouble is that many of the species vary a lot (and they are rare).
Posted by pwalter on 19-09-2010 14:56
#7
Yes, I think the halteres are pale, thanks!
Posted by jorgemotalmeida on 19-09-2010 15:37
#8
well, Jaako, I can tell you that Dr. Christian Kehlmaier told me once time: "I think that European Ogcodes is a real mess at the moment. Once there is sufficient material available for molecular studies, we'll hopefully find out more about their real diversity."
So, it is important to someone dive in this genus to know without any doubts the species.
Posted by Jaakko on 20-09-2010 09:42
#9
Ok. I donīt know much about this extremely interesting family. However, I would not be surprised if it turned out to be rather species poor than rich. All parasites of spiders, restricted habitats (as far as known), low in numbers etc. It is easy to understand what governs the biodiversity in Tachinidae, but in Acroceridae? The complication to my impression is that the characters used in the older litterature vary in nature and due to lack of specimens nobody has really found out the borders of this variation.. Having said that, I have only
O. nigripes from Finland, with which I had to struggle quite a lot, so thatīs all what comes to my personal qualifications... Luckily the Chavala (1980) has good descriptions of the known European species.
Very interesting family indeed.. too bad that you collect these by luck only.:(
Best,
Jaakko
Posted by Zeegers on 20-09-2010 18:16
#10
And see also the Dutch review by De Jong et al. (including... myself) in Entomologische Berichten.
Indeed, with not all the answers
Theo
Posted by jorgemotalmeida on 20-09-2010 18:43
#11
Thanks Jaako and Theo for your inputs. I will look forward for those documents.
Posted by Christian Kehlmaier on 24-07-2012 08:26
#12
Ogcodes gibbosus
Posted by pwalter on 27-07-2012 06:58
#13
Thanks!
Walter