New cockroaches from the upper carboniferous of siberia (Insecta: Dictyoptera, mylacridina)

Cockroaches (Dictyoptera, Mylacridina) from the Chunya locality (Upper Carboniferous of the Central Siberian Plateau) are considered. New representatives of the family Phyloblattidae Schneider, 1983 (Phyloblatta majuscula sp. nov., P. chunyensis sp. nov., Hesperoblatta vishniakovae sp. nov., and H. secunda sp. nov.) are described.