Hylaeus (Patagiata) nigrocuneatus Cockerell, 1924
Hylaeus nigrocuneatus Cockerell, 1924a: 277, ♀, Ƌ (holotype—Ƌ, “Kudia-River, Siberia” [Primorskiy Terr., Russia], VI.1923, leg. W. & T. Cockerell, NHML 17.a.4).
Hylaeus nigrocuneatus var. rufipennis Cockerell, 1924a: 278, ♀, Ƌ (type locality: “Okeanskaja, Siberia” [Vladivostok, Primorskiy Terr., Russia]).
Hylaeus brevicuneatus Cockerell, 1924b: 579, ♀ (type locality: “Kongaus, Siberia” [Anisimovka, Primorskiy Terr., Russia]).
Hylaeus lavrushini Cockerell, 1924b: 579, ♀ (type locality: “Kongaus, Siberia” [Anisimovka, Primorskiy Terr., Russia]).
Hylaeus paradifformis Ikudome, 1989: 224 –233, ♀, Ƌ (type locality: Ashoro, Hokkaido, Japan).
Material examined. Mongolia. Tuv Aimag: 1 ♂, Tola River Valley, 1–10.VII.1926, PK (ZISP); 90 km N Ulaanbaatar, Segnez River, 1450 m, 6–8.VII.2003, JH (OLBL).
Distribution in Mongolia. *Tuv Aimag (Fig. 3 f).
General distribution. * Mongolia, Russia (Asian part), China, Japan.