First comprehensive research on pseudoscorpions (Arachnida: Pseudoscorpiones) collected from bird nests in Russia

The first comprehensive research on pseudoscorpion fauna in bird nests in Russia was carried out. A total of 131 pseudoscorpion specimens belonging to nine species and three families were collected. Eight of them were present in bird nests. One species was found in the plumage of dead Larus ridibundus (Linnaeus, 1766). Four species, Diplotemnus balcanicus (Redikorzev, 1928), Chernes vicinus (Beier, 1932), Dinocheirus panzeri (C.L. Koch, 1837), and Dinocheirus transcaspius (Redikorzev, 1922), are presented as new to the fauna of Russia. Simultaneously genera Dinocheirus and Diplotemnus and family Atemnidae are new for the pseudoscorpion fauna of Russia.