Tridrikh N.N.1, Sorokina V.S.2 2020. [A distribution analysis of Muscidae (Diptera) of the Northern Okhotia in Magadanskaya Oblast, Russia] // Euroasian Entomological Journal. Vol.19. No.2: 85–94 [in Russian, with English summary].
1 Magadan Natural Reserve, Koltsevaya Str. 17, Magadan 685000 Russia. E-mail: firstname.lastname@example.org
2 Institute of Systematics and Ecology of Animals, Russian Academy of Sciences, Siberian Branch, Frunze Str. 11, Novosibirsk 630091 Russia. E-mail: email@example.com
ABSTRACT. A distribution analysis of Muscidae (Diptera) of the Northern Okhotia is given. The territory of the studied region is limited mainly to the Magadanskaya Oblast, Russia. Currently, 108 species in 25 genera were found in this region; 14 species and two genera are newly recorded from this territory, including Spilogona anthrax (Bigot, 1885) which is new to Russia and the Palaearctic region.
The distribution of 106 species was analyzed; Limnophora sp. and Phaonia cf. crassipalpis Shinonaga & Kano, 1971 were excluded from this analysis. Four distribution complexes of Muscidae were distinguished: the Cosmopolitan complex (8 species), the Multiregional complex (8 species), the Holarctic complex (61 species) and the Palaearctic complex (29 species). According to the longitudinal distribution of species within the Palaearctic and Holarctic complex, the following subgroups of the ranges are identified: 1) in the Palaearctic: trans-Eurasian (21 species), Siberian-Far-Eastern (8 species); 2) in the Holarctic: amphipacific (4 species), Siberian-American (13 species) and trans-Holarctic (44 species).
According to the latitudinal distribution in the fauna of the Northern Okhotia, species with Holarctic distribution are dominant (57%), most being confined to the tundra and forest landscapes. Distributions classed as boreo-montane (32%), arctic-boreo-montane (16%), arcto-montane (in the broad sense) (15%) and arctic (in the broad sense) (11%) reached the highest percentages for all species. The regional list of Muscidae species will probably be increased after further study of northern territories of the Northern Okhotia.
KEY WORDS: flies, distribution, ranges, Palaearctic, Holarctic, Far East, Siberia.