THE MAYFLIES (INSECTA, EPHEMEROPTERA) OF THE NORTH OF THE FAR EAST OF RUSSIA

Abstract

Based on the literature and original data, a review of the fauna of mayflies (Ephemeroptera) of the North of the Russian Far East is given. To date, the faunistic list of mayfl ies in the region includes 72 species from 23 genera and 8 families. In the watercourses of the Magadan Region, 52 species are recorded, Chukotka Autonomous District – 27, the north of the Khabarovsk territory (a part of Okhotsk north of the Tugur River in the south and the Okhota River in the north) – 57, and Kamchatka – 37 species. Within local faunas, species with the Eastern Palearctic type of distribution prevail in all regions of the North of the Far East, reaching a maximum in north of the Khabarovsk Territory (54 %). The species richness of mayfl ies revealed for the North of the Far East is much less than in the watercourses and reservoirs of the south of the Far East and Eastern Siberia (bass of Lake Baikal), but quite comparable with the fauna of adjacent territories and other northern European countries.