<ref name="Arnold_1956">{{cite journal |first1=G. |last1=Arnold |year=1956 |title=New species of African Hymenoptera. No. 12 |url=https://antcat.org/documents/80/6913.pdf |journal=Occasional Papers of the National Museum of Southern Rhodesia. B. Natural Sciences |publisher= |volume=3 |issue= |pages=52–77 |doi= }}</ref>