Neodiplostomum intermedium n.sp. from the allied rat, Rattus assimilis, with remarks on the genera Neodiplostomum and Fibricola (Trematoda: Diplostomatidae)

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Abstract
Neodiplostomum intermedium n.sp. from the small intestine of the allied rat, Rattus assimilis, is described. It can be separated from other species of Neodiplostomum by the following combination of characters: genital cone absent; vitellaria form two ventro-lateral bands in hindbody without terminal masses; anterior testis nearly symmetric, as wide as posterior testis. It is proposed that Fibricola be made a subgenus of Neodiplostomum containing the species in Fibricola and the species, N. intermedium described herein, because N. intermedium is intermediate between Neodiplostomum(Neodiplostomum) and Fibricola. Further evidence is given in favour of the invalidation of the subfamily Alariinae.