Rhaphium Meigen (Diptcra, Dolichopodidae) from the Taimyr Peninsula (Russia), with description of a new species

摘要

Eight species of Rhaphium Mg. are recorded from the southern tundra of the Taimyr Peninsula (Russia), including the description of a new species, Rhaphium borisovi Negrobov, Barkalov & Selivanova sp. nov. The new species is similar to Rhaphium gruniniani Negrobov and differs from it by yellow fore coxa, equal length of hind tarsomeres 1-2 and broader inner lobe of cercus. The female of Rhaphium beringiense Negrobov & Vockeroth is described. A key to Siberian species (exclusive of Far East species) ofthe genus Rhaphium is presented and morphological characters of all species are illustrated.