Results of the study of over 10 thousand specimens of Nomiinae, mostly from the collection of the Zoological Institute of Russian Academy of Sciences (St. Petersburg). Two new synonyms are ascertained: Nomia inermis Morawitz, 1894 = Nomia orientana Warncke, 1976, syn. n. = Pseudapis guichardi Pauly, 1990, syn. n. The lectotypes of the following nominal taxa of the species group are designated: Nomia areocincta var. turcomanica Radoszkowski, N. edentata ssp. elengantissima Popov, N. inermis Morawitz, N. latipes Morawitz, N. squamata Morawitz, and N. tadzhica Popov. Distribution ranges of 11 species are significantly extended owing to the new material examined: Pseudapis elegantissima (Popov) are recorded from Russia, Kazakhstan, and Uzbekistan for the first time; Pseudapis inermis (Morawitz), from Georgia; Nomiapis armata (Olivier), N. equestris (Gerstäcker), Pseudapis bytinski (Warncke), and P. edentata (Morawitz), from Azerbaijan; Nomiapis valga (Gerstäcker) and Pseudapis rufescens (Morawitz), from Kazakhstan; Nomiapis bispinosa (Brullé), from Kazakhstan, Uzbekistan, Kyrghyzstan; N. squamata (Morawitz), from Kyrghyzstan and Iran; N. femoralis (Pallas), from Uzbekistan and Tajikistan. An annotated list of 26 species of Nomiinae provided with data on their synonymy and distribution is given.