Materials on the Fauna of Butterflies (Lepidoptera, Rhopalocera) of Alas Ecosystems of Central Yakutia

Abstract

The species composition, distribution on belts and abundance of Rhopalocera of alas ecosystems of Central Yakutia areconsidered. 67 species of Rhopalocera of 31 genus and 6 families are registered on the model alases of the «Tyungyulyu» base of Institute for Biological Problems of Cryolithozone SB RAS. 19 species and 4 genus from them are given for the first time for alas fauna. The biggest species diversity is registered in the family Nymphalidae, which includes 21 species, then Satyridae (16 species) and Lycaenidae (14 species). The butterflies of the alases are characterized by a large number of single and low-abundance species and among them Melitaea latonigena Eversmann, 1847 is numerous. There are 57 species on three hydrothermal belts of the alases, 56 – on the fringe of larch forest, 23 – in the forest. The arealogical analysis of fauna of Rhopalocera showed that the core of fauna is composed by widespread transpalaearctic and trans-Eurasian temperates species. The most original part of fauna of the studied alases is formed by species of Siberian-Far East boreal (10%), and also Siberian-Mongolian (2%) and Daursky steppe (2%) groups. For this time the fauna of Rhopalocera of alas-taiga ecosystems of the Lena–Amga Rivers' interfluve is studied enough and the indicated number of species is close to the final.