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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

Last update: 06.06.13 15:01
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#1 | von Tschirnhaus on 30 May 2013 18:30:35
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 All these characters here observable are not sufficient but typical for a distinction after the unpublished study (of much material including the types of gilvipes and germanicum) by M. von Tschirnhaus.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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10 June 2023 15:40
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Has anyone used the Leica DM500, any comments.

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Yes, dipterologists from far abroad, please buy your copy at veldshop. Stamps will be expensive, but he, the book is unreasonably cheap Smile

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Can any1 help out with a pdf copy of 1941 Hammer. Vidensk. Meddel. Dansk Naturhist. Foren. 105; thank you

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Found! https://www.veldsh
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Lis - This is vol.11 (eleven) and is 346 pages. Sorry, don't have a copy.

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