(Figs 3 g, 7 i –j)
Hylaeus paulus Bridwell 1919: 154, Ƥ (holotype—Ƥ, Karuizawa, Honshu, Japan, IX. 1973); Davydova 2002: 94; Davydova & Pesenko 2002: 583; Proshchalykin 2003 a: 26; 2003 b: 3; 2004: 3; 2005: 30; 2007 a: 882; 2007 b: 89; 2008: 6; 2010: 509; Proshchalykin et al. 2004: 157; Ignatenko 2004: 112; Proshchalykin & Kupianskaya 2005: 6; Ignatenko & Proshchalykin 2005: 244; Chen & Xu 2009: 44; Quest 2009: 131; Proshchalykin & Quest 2009: 239.
Hylaeus lepidulus Cockerell 1924 a: 282 –283, 3 (holotype— 3, “Kudia-River, Siberia” [Primorskiy Terr., Russia], VI. 1923, leg. T. Cockerell); Dathe et al. 1996: 157. Synonymized by Amiet et al. 1999: 125.
Prosopis paulus: Osytshnjuk & Romankova 1995: 487.
Material examined: 112 Ƥ, 67 3. Russia. Tyva Republic (20 km NW Chadan, Kyzyl); Yakutia (Vilyui River, Cherimekh River, Nizhniy Kuranakh); Amurskaya Prov. (Kundur); Jewish AP (Stolbovoe, Kuldur); Primorskiy Terr. (Lazovskiy Nature Reserve, Lazo, Ryazanovka, Khasan, Kamen-Rybolov, Andreevka, Vityaz, Barabash- Levada, Domashlino, Spassk); Khabarovsk Terr. (Pivan); Sakhalin (4 km S Dolinsk); Kuril Islands (Kunashir: Goryachee Lake, Sernovodsk, 5 km N Golovnino); Kamchatskiy Terr. (Elisovo, Esso, Petropavlovsk-Kamchatskiy, Kozyrevsk, Mil’kovo).
Distribution in Russia. *Tyva Republic, Yakutia, Amurskaya Prov., Jewish AP, Primorskiy Terr., Khabarovsk Terr., Sakhalin, Kuril Islands (Kunashir), Kamchatskiy Terr.
General distribution. Eurosiberian species; has so far been found in Austria, Hungary, Switzerland, Czech Republic, Slovakia, Germany, Poland up to Mongolia, Asian part of Russia, China (Beijing, Heilongjiang, Jilin, Shandong), and Japan (Hokkaido, Honshu, Kyushu).