J. M.  Cumming, Sinclair, B. J., and Wood, D. M., ?Homology and phylogenetic implications of male genitalia in Diptera - Eremoneura?, Entomologica scandinavica, vol. 26, pp. 120-151, 1995.

B. J.  Sinclair, Cumming, J. M., and Wood, D. M., ?Homology and phylogenetic implications of male genitalia in diptera - lower Brachycera?, Entomologica scandinavica, vol. 24, pp. 407-432, 1993.