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Moscow region, 14 july, 3-4mm

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Hi Nikita,

Geomyza yes; tripunctata no! This is a member of the "combinata group". Although Geomyza combinata is no longer in use as a species name, it is tempting to still call the species group "combinata group". My guess would be Geomyza hackmani, however it is difficult to be sure after a picture. Studying the genitalia would get you a positive identification. Please collect material like this! I am always very interesting in studying it!!

Jan Willem

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Thank you Jan.
1. Collected, labeled and wait for you...
2. Do you have any link with Geomysa key, in my there are not neither combinata, nor hackmani.
Nikita

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Hi Nikita,

GOOD that you collected the specimen.

As far as I know there are no online keys to Opomyzidae, so sorry, no link. Are you sure that Geomyza combinata is not in your key? I can hardly imagine that! Literature to use:

Carles-Tolr?, M. 1993. Tri novych vida sem. Opomyzidae (Diptera) iz Ispanii [Three new species of the fam. Opomyzidae (Diptera) from Spain]. Entomologicheskoe Obozr?nie, 72(2): 410-413 (in Russian).

Carles-Tolr?, M., 1993c. A new species of Geomyza, with new acalyptrate records to the Iberian Peninsula (Diptera, Acalyptratae).? Historia Animalium 2: 49-55.

Drake, C. M. (1992): Two new species of Geomyza with notes on the combinata group (Diptera: Opomyzidae). - British Journal of Entomology and Natural History 5: 143-152; London.

Drake, C. M. (1993): A review of the British Opomyzidae (Diptera). - British Journal of Entomology and Natural History 6: 159-176; London.

Martinek, V., 1978a. The female of Opomyza thalhammeri and a new species of the genus Geomyza (Diptera, Opomyzidae).? Acta entomologica bohemoslovaca 75: 336-343.

Nartshuk, E.P., 1993a. Three new species of Geomyza from the Palaearctic Region (Diptera: Opomyzidae).? Zoosystematica Rossica 1: 142-144.

Zuijlen, J.W.A. van, 1999. Notes on the Fall?n collection of Opomyzidae (Diptera) in the Naturhistoriska Riksmuseet, Stockholm.?Studia dipterologica 6(1): 129-134.

Jan Willem

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Realy, there is "combinata".
Realy, there isn't pteropleural seta. Sorry
Thank you for Literature, Jan.
Nikita

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for any M Carles-Tolr? Hjorth Andersen articles, i can translate if you want (but from spanish! )

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Thank you Paqui.