1958 Fascicule 53: Hopliini, Pemphredoninae
Exploration of Upemba National Park: Mission by G. F. De Witte (1946-1949)
SCHEIN, H. Hopliini. 15 p., 4 figs.
LECLERCQ, J. Pemphredoninae. 45 p., 41 figs.