Pisidium maasseni n. sp. is described from abundant material from Lake Prespa (Prespansko Jezero) in southern Jugoslavia. A noticeably compressed shell with flat beaks and a regular, dense striation distinguishes the new taxon from the other European species.

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Basteria

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Nederlandse Malacologische Vereniging

J.G.J. Kuiper. (1987). Pisidium maasseni n. sp., a new species from Lake Prespa, Jugoslavia (Bivalvia, Sphaeriidae). Basteria, 51(4/6), 163–165.