Wheeler, W. M. 1923d. Report on the ants collected by the Barbados-Antigua Expedition from the University of Iowa in 1918. Studies in Natural History. Iowa University 10(3):3-9. PDF

Mann, W. M. 1925b. Ants collected by the University of Iowa Fiji-New Zealand Expedition. Studies in Natural History. Iowa University 11(4):5-6. PDF