Overview of the Caucasian Perla Geoffroy, 1762 (Plecoptera: Perlidae) based on morphological and molecular data with description of two new species.

Six species of Caucasian Perla are reviewed, and diagnostic morphological characteristics of all stages of development (where possible) are described, supplemented, and illustrated in detail with comparative light microscope and scanning electron microscopy images. The DNA barcoding of five species is presented. Two new morphologically and genetically distinct species, Perla schapsugica sp.

Redescription of a few Filchneria Klapálek, 1908 (Plecoptera, Perlodidae) species on the type and fresh material.

Five Filchneria Klapálek, 1908 (Plecoptera, Perlodidae) species known since the last century (F. balcarica Balinsky, F. mesasiatica Zhiltzova, F.

Additions to the fauna and biology of stoneflies (Plecoptera) in Taizi River Basin, Liaoning, with seven new species records to China.

Background: An investigation report of stonefly fauna in Benxi Manchu Autonomous County, Liaoning Province, northeast China (used to be called Manchuria, now includes Liaoning, Jilin, Heilongjiang Provinces and parts of Inner Mongolia, which are adjacent to the Russian Far East and the Korean Peninsula). Materials were studied with field observation in 2018 and 2019.

New Information: This paper records five families, nine genera and 14 species of stoneflies from Taizi River, Liaoning Province.

Morphological description of a new species of Capnia (Plecoptera: Capniidae) with DNA barcoding of genus members from the Russian Far East.

Capnia yavorskayae, a new species of the stonefly family Capniidae, is described from the Low Amur River Basin, Khabarovskiy Kray of the Russian Far East, on the basis of female morphological features. Confirmation of the uniqueness of the new species was also molecularly compared to other Capnia, including a few Far Eastern species, C. aligera Zapekina-Dulkeit, C.

Environmental protection measures in mineral resource development: case study of a gold-bearing deposit in the Russian Far East.

In the Russian mining industry, the recent social and economic processes inevitably affect environmental safety and the social security of all those affected by mining. Thus, this study aimed to evaluate the technogenic impacts of a mining company on the environment. Measures were developed and implemented to ensure ecological safety and social security during a mineral resource development project in the southern part of the Russian Far East.