Knutson, L. and Bredt, A. 1976. Two new species of snail-killing flies from west-central Brazil (Diptera, Sciomyzidae). Papéis Avulsos de Zoologia. 30, 1-20 (1976-1977) (Dec. 1976), 113–118. DOI:https://doi.org/10.11606/0031-1049.1976.30.p113-118.