Россия

Collecting efforts on the rivers Sura and Moksha in the autono- mous Republic of Mordovia (Russia) have resulted in the detec- tion of 14 species of caddisflies, which are recorded from the Republic for the first time. To date, a total of 39 species are listed for the Republic, which is only a small fragment of the residential fauna. It is expected, that more than 200 species of caddisflies occur in the region.

The casebearer`s fauna of the South-East of European Russia in its forest-steppe and steppe landscape zones on the territory of the Volga region in 1990–2016 was studied. The high species richness and the heterogeneity of the taxonomic structure of the casebearer moths on the border of forest and steppe cenoses on the border with the steppe were observed. It was established dwelling 172 species of casebearers of the 49 genera and their biotopical distribution in the studied landscapes.

The study of acoustic signals from various representatives of insects, and in particular coleopterans, has a long history. In the Russian-language literature, systematic, faunistic and ecological studies on aquatic beetles, including those on the family Hydrophilidae, are widely known; however, studies on the bioacoustics of the coleopteran group are quite rare. The aim of our study was to study stress signals of two species of Hydrophilidae – Berosus frontifoveatus Kuwert, 1888 and Berosus spinosus Steven, 1808.