Name-bearing types of species group taxa in the collection of birds made by M.M. Berezovsky during the Gansu expedition of G.N. Potanin in 1884-1887

摘要

Fixation of the holotype Sitta leucopsis przewalskii Berezowski, Bianchi, 1891 and lectotypes Suthora przewalskii Berezowski, Bianchi, 1891 and Parus palustris hypermelas (Berezowski, Bianchi, 1891) has been confirmed based on studying the collection of M.M. Berezovsky and published materials. Lectotypes and paralectotypes for Garrulax sukatschewi (Berezowski, Bianchi, 1891 ) and Parus davidi (Berezowski, Bianchi, 1891) are fixed for the first time. A problem on the form "obscura" (a separate species or only a morpha of Luscinia pectardens?) with the corresponding nomenclature comments is considered.