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Photo Albums > Chloropidae > Oscinisoma cognatum (female) (1) << >>
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Copenhagen, 19-02-2013. ID: von Tschirnhaus: http://www.dipter...d_id=53337

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#1 | von Tschirnhaus on 30 May 2013 19:30:35
The three species O. germanicum (Duda, 1932), O. gilvipes (Loew, 1858), and O. cognatum are extremely difficult to distinguish. The image shows a shining humeral callus (= shoulder), a largely dark gena, a slightly flattened thorax, a wing only slightly longer than the abdomen, a completely yellow hind tibia, a frons darkened aside of the ocellar triangle, an ocellar triangle very long and with pollen (= pubescence) only aside and in front of the ocelli, a triangle not touching the eye margin, about ¾ width of the frons between the eyes, tergites glabrous, wing membrane partly yellowish, R4+5 apically slightly divergent with M1+2. All these characters here observable are not sufficient but typical for a distinction after the unpublished study (of much material including the types of gilvipes and germanicum) by M. von Tschirnhaus.
This is a typical species of the genus Oscinisoma Lioy, 1864 (Chloropidae, Oscinellinae), partly wrongly spelled Oscinosoma. The mesonotum (= scutum) is slightly depressed and not smooth but it has a rough surface. The adults prefer the stratum close to the soil between Carex tussocks, running ant-like and living together with the raptorious Stilpon spp. (Hybotidae).
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22 May 2018 09:45
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21.05.18 23:44
Hello friends, I've heard from Stephane today and he is safe and sound. Very good news!

21.05.18 12:23
Thanks very much

19.05.18 22:27
z.gr.T: zum großen/größten Teil. You should purchase a copy of Duden Das Wörterbuch der Abkürzungen.

19.05.18 12:20
No-one knows where Stephane is, we all hope he is well...

19.05.18 12:19
Hello Can any1 help with the meaning of an abbrev. Rebberge (Muscarl-Alllelum Hüg. 56 z. gr. T.) z.gr.T - thx

17.05.18 01:21
Where is Stéphane Lebrun? I strongly miss his expertise in Muscidae Frown. I hope, he is doing well these days. Jürgen

09.05.18 13:38
Thanks Tony

08.05.18 21:47
Katalog der paläarktischen Dipteren

08.05.18 11:20
Hello Can any1 help out with thye full title of Kat. Pal. Dipt. Thanks

03.05.18 22:05
Next week I hope to have time again to ID Anthomyiidae......
.. Johanna

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