Dr. Murai Éva - Gubányi András szerk.: Parasitologia Hungarica 28. (Budapest, 1995)

Sphincterostoma Oshmarin, Mamaev et Paruchin, 1961 ; Anterovitellosum Gupta, 1967; Caecobiporum Mamaev, 1970 and Diploproctia Mamaev, 1970. From the point of view of the taxonomic position of the newly described species and the formulation of the scope of the genus Bianium, an analysis of the former 7 genera schould be done because the opinions on the validity of the genera in question have changed due to the diverse notions on stability of the generic and specific characters. The debate has especially focused on the validity of the genera Diploproctodaeum and Bianiuim (Sogandares-Bernai and Hutton 1958, Gupta 1968, Shimazu, 1989 etc.). Fig. 1. A — Bianium arabicum sp. n., ventral view, bar 100 micrometer, B — SEM micrograph of the anterior part of the body of Bianium arabicum sp. n., bar 50 micrometer, C — Openings of ani of Bianium arabicum sp. n., bar 55 micrometer.