Odhneripisidium Kuiper, 1962

Bespalaya, Yulia V., Vinarski, Maxim V., Aksenova, Olga V., Babushkin, Evgeniy S., Gofarov, Mikhail Yu., Kondakov, Alexander V., Konopleva, Ekaterina S., Kropotin, Alexander V., Mabrouki, Youness, Ovchankova, Nadezda B., Palatov, Dmitry M., Sokolova, Svetlana E., Shevchenko, Alexander R., Travina, Oksana V., Taybi, Abdelkhaleq F., Soboleva, Alena A., Zubrii, Natalia A. & Bolotov, Ivan N., 2024, Phylogeny, taxonomy, and biogeography of the Sphaeriinae (Bivalvia: Sphaeriidae), Zoological Journal of the Linnean Society 201 (2), pp. 305-338 : 330

Genus Odhneripisidium Kuiper, 1962

Type species: Pisidium stewarti Preston, 1909 . Diagnosis. The shell is small (up to 3 mm in length), oval, rounded, or triangular. The beaks are rounded and slightly or not prominent, and somewhat offset to the posterior edge of the valves. Only one (exhalant) siphon is present. The outer demibranch is completely reduced.

Reproductive biology: This genus is characterized as a synchronous brooder (embryos are developing within a distinct brood sac).

Distribution: The range of the genus covers Europe, Africa, Asia, and South and North America, including high-altitude and high-latitude (Arctic, Subarctic) regions ( Fig. 3D ).

Figures

Figure 3. Maps of approximate geographic distribution of six genera of the Sphaeriinae in the world based on available 16S rRNA sequences: (A) Sphaerium; (B) Euglesa; (C) Pisidium s.s.; (D) Odhneripisiduim; (E) Hindupisidium; (F) Conventus.