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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 16:01
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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 All these characters here observable are not sufficient but typical for a distinction after the unpublished study (of much material including the types of gilvipes and germanicum) by M. von Tschirnhaus.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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Date and time
16 October 2018 07:56
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15.10.18 14:33
Thx Paul

15.10.18 09:43
Heya guys. Does anyone know how many Braulidae species there are in the UK and if there are any resources for ID purposes available? Pfft

13.10.18 22:24
found dead

12.10.18 12:49
Hello I'd be grateful if so. could help me translate Nachweis als Totfund - Records as ? Thx

25.09.18 09:53
Costa, Diptera acquisitions in 1863, Annuario del Museo Zoologico della R. Universita di Napoli 3: 31-40

25.09.18 09:45
Rondani material in Naples, please check Thompson & Thompson, Studia dipterologica 13 (2006) Heft 2: 317-331

20.09.18 16:28
Thx to Tony and Paul, ref now found

19.09.18 14:31
Full reference?

14.09.18 14:32
Hello can any1 help with th full title of tnis publication hist. nat. ins. thx

05.09.18 13:02
Heya guys has anyone ever seen any Episyrphus balteatus larval development in heart rot before. I've found quite a lot in Fraxinus today with the pupae also! Pfft

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