A taxonomic revision of the freshwater monostiliferous hoplonemertean genus Prostoma Dugs, 1828 (Nemertea: Eumonostilifera): a radical solution or an over-lumping?

The freshwater monostiliferous hoplonemertean genus Prostoma Dugs, 1828 is revised based on i) morphological examination of material from Lake Biwa, Japan, and type materials of P. kolasai Gibson & Moore, 1976 and P. canadiense Gibson & Moore, 1978;…

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