Magno S. Ramos, Evgeny E. Perkovsky, Alexander P. Rasnitsyn, and Celso O. Azevedo. Revision of Bethylinae fossils (Hymenoptera: Bethylidae) from Baltic, Rovno and Oise amber, with comments on the Tertiary fauna of the subfamily // N.Jb. Geol. Palaont. Abh.. — Штутгарт: E. Schweizerbart'sche Veragsbuchhandlung, 2014. — Vol. 271/2. — P. 203—228. — doi:10.1016/j.cretres.2005.07.003.