Records of the grassflies (Diptera, Chloropidae) of the Palaearchearctic Geoelement on the Altai Mountains

Nartshuk E. P.

DOI: https://doi.org/10.2478/v10058-010-0006-x

Abstract

Four species of grassflies (Diptera, Chloropidae), Lasiambia shatalkini Nartshuk, 1986, Siphunculina stackelbergi Duda, 1933, Centorisoma flavum Nartshuk, 1965, and Cetema bispinosa Duda, 1933 are found on the Altai Mountains. These species were hitherto known from the Far East of Russia and the latter also from North Mongolia. The new records clarify the western border of ranges of these species. Distribution of the genera Centorisoma Becker, 1910 and Cetema Hendel, 1907, each including in the Palaearctic two groups of species with centres of distribution in Europe and the Far East, permits to consider the origin of these genera from Tertiary Turgai forests.

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