Propsilocerus amurensis sp.n. (Diptera, Chironomidae, Orthocladiinae) from Amur River basin (Russian Far East)
A new species, Propsilocerus amurensis sp.n., is described from the Low Amur River basin (Russian Far East) by male imago. A new species is close related to Propsilocerus sinicus Sæther et Wang but can be easily separated from the latter by features of hypopygium, namely by median volsellae which possesses long, straight basal part and spinous apical process directed near at right angles to basal part.