The second species of the Takagripopteryx genus, namely T. imamurai Kohno, known previously only from Hoccaido, was found in rivers of the Sakhalin southern part. The identification key is given for two species of the ...

Epidaus tuberosus Yang, 1940 (=Nagusta czerckii Mamajeva, 1972, syn. n.) belongs to the group of species intermediate in their morphology between the genera Epidaus and Endochus, and is closely related to Epidaus nebula ...