Sundapolystoma chalconotae n. g., n. sp (Monogenea : Polystomatidae) from Rana chalconota (Schlegel) of Peninsular Malaysia

Sundapolystoma chalconotae. n. g., n. sp. (Polystomatidae, Polystomatinae) is proposed for a new polystomatid from the urinary bladder of Rana chalcon ota (Schlegel) in Peninsular Malaysia. This is the first species of polysto matid to be described from the amphibians of Peninsular Malaysia and the se cond for the Southeast Asian region. This new genus, as exemplified by S. c halconotae, differs from other polystomatids, and in particular Parapolysto ma Ozaki, 1935 (P. bulliense (Johnston, 1912) Ozaki, 1935 and P. johnstoni Pichelin, 1995), in having a tubular uterus and a single diffuse testis. P. crooki Vande Vusse, 1976 is similar to S. chalconotae in having a similar type of uterus and testis, and is re-assigned as Sundapolystoma crooki (Van de Vusse, 1976) n. comb. S. chalconotae differs from S. crooki in having an chors with a longer outer root rather than a longer inner root and 7-8 geni tal spines compared to 9-13 in S. crooki.