J. C. H.  de Meijere, ?Studien uber sudostasiatische Dipteren. III.?, Tijdschrift voor Entomologie, vol. 51, pp. 191-332, pls. 7-8, 1908.

W. M.  Wheeler, ?Studies of myrmecophiles. III. Microdon?, Journal of the New York Entomological Society, vol. 16, pp. 202-213, 1908.