The first record of <i>Platysmittia </i>Sæther (Diptera, Chironomidae, Orthocladiinae) in Palaearctic region
A brief description of a new Palaearctic chironomid genus and species Platysmittia bilyji Sæther is made from the male imago, pupa and larva from Zeya Reservoir basin (Amursky Region, Russian Far East).