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An updated checklist and a revised key to the males of Palaearctic species of the genus Medetera including all 180 species and 3 subspecies are provided; 27 species are included in the key for the first time. Medetera belgica Parent, M. bilineata Frey, M. kowarzi Negrobov, M. miki Negrobov, M. peloria Negrobov, M. sphaeropyga Negrobov, M. tarasovae Negrobov, and M. thunebergi Negrobov, stat. resurr., are removed from synonymy based on the differences in the male genitalia.

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РОССИЙСКАЯ АКАДЕМИЯ НАУК Южный Научный Центр RUSSIAN ACADEMY OF SCIENCES Southern Scientific Centre CAUCASIAN ENTOMOLOGICAL BULLETIN Ростов-на-Дону 2010 The Rhaphium crassipes species group in the Palearctic Region with the description of a new species from Uzbekistan (Diptera: Dolichopodidae) Палеарктические виды группы Rhaphium crassipes и описание нового вида из Узбекистана (Diptera: Dolichopodidae)

A New Species of the Genus Rhaphium (Dolichopodidae, Diptera) from Siberia Rhaphium sibiricus Negrobov, Barkalov et Selivanova, sp. n. is described from the Altai Mountains. The new species is similar to Rhaphium gruniniani Negrobov, 1979, differing by black legs, simple, not thickened tip of fore basitarsus, length ratio of apical portion of vein CuA1 to crossvein dm-cu and by the shape of gonopodes.

The paper presents a critical review of the Dolichopodidae family in the Astrakhan State Nature Biosphere Reserve (Russia). In total, 23 species from the Dolichopodidae family were indicated for this Protected Area. Four of these species have been recorded for the first time for both Europe and Russia: Asyndetus albipalpus, Asyndetus chaetifemoratus, Chrysotus dorli, Hercostomus rubroviridissimus. In addition, Dolichopus jaxarticus and Sciapus subvicinus are new species for Russia. Twenty species (Asyndetus albipalpus, Asyndetus chaetifemoratus, Asyndetus latifrons, Campsicnemus filipes, Campsicnemus simplicissimus, Chrysotus cilipes, Chrysotus dorli, Dolichopus calinotus, Dolichopus cilifemoratus, Dolichopus latilimbatus, Dolichopus jaxarticus, Hercostomus convergens, Hercostomus rubroviridissimus, Medetera diadema, Medetera plumbella, Nematoproctus longifilus, Poecilobothrus bigoti, Rhaphium penicillatum, Sciapus longulus, Sciapus subvicinus) are firstly recorded for the Astrakhan region. To date, 34 Dolichopodidae species are known in the Astrakhan region. However, further studies of the Dolichopodidae fauna in Protected Areas are needed for a more comprehensive knowledge on this Diptera family in Russia and in Eurasia as a whole.

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