Arnold, G. 1944. New species of African Hymenoptera. No. 5. Occasional Papers of the National Museum of Southern Rhodesia 2:1-38. PDF

Arnold, G. 1946. New species of African Hymenoptera. No. 6. Occasional Papers of the National Museum of Southern Rhodesia 2:49-97. PDF

Arnold, G. 1947. New species of African Hymenoptera. No. 7. Occasional Papers of the National Museum of Southern Rhodesia 2:131-167. PDF

Arnold, G. 1948. New species of African Hymenoptera. No. 8. Occasional Papers of the National Museum of Southern Rhodesia 2:213-250. PDF

Arnold, G. 1949. New species of African Hymenoptera. No. 9. Occasional Papers of the National Museum of Southern Rhodesia 2:261-275. PDF

Arnold, G. 1952a. New species of African Hymenoptera. No. 10. Occasional Papers of the National Museum of Southern Rhodesia 2:460-493. PDF

Arnold, G. 1955. New species of African Hymenoptera. No. 11. Occasional Papers of the National Museum of Southern Rhodesia 2:733-762. PDF