New and little-known species of ground - beetles of the subgenus Melanius Bon of genus Pterostichus Bon. (Coleoptera: Carabidae) from Palearctic region

After revision of types and other material the taxonomic status of some Carabid was to changed.New status: P. michailovi Wrase spec. distr., non ssp. ad P. gracilis (Dej). Described:P. kozlovi sp. n. (Chine), P. pseudorhaeticus sp. n. (Eastern Sayan, Transbaicalia),P. nigrita karnoldii ssp. n. (Tian-Shan, Fergana Valley). The key for determinationof species of subgenus Melanius Bon. is composed.