Pisidium obtusale ( Lamarck, 1818 )

Marković, Vanja, Gojšina, Vukašin, Novaković, Boris, Božanić, Milenka, Stojanović, Katarina, Karan-Žnidaršič, Tamara & Živić, Ivana, 2021, The freshwater molluscs of Serbia: Annotated checklist with remarks on distribution and protection status, Zootaxa 5003 (1), pp. 1-64 : 35-36

73. Pisidium obtusale ( Lamarck, 1818)

Findings in Serbia.

Pisidium obtusale: Martinović-Vitanovic et al. (2013) .

Common name. Porous shelled pea mussel.

Morphology. Minute bivalve. Oval shell is small, very tumid (almost spherical) with a very rounded ventral margin. It reaches about 3.5 mm in length, 3 mm in height, and 3 mm in depth. For more details see Welter-Schultes (2012: 21, figure at the bottom of the page).

Distribution and ecology. Holarctic species being found usually in smaller standing waters such as swamps, ponds, and marsh drains with dense aquatic vegetation. It prefers muddy, silty substrates, usually with a high organic content (Van Damme 2011 b). In Serbia, it was recorded in the Danube.

Other remarks. It has been assessed as LC on the global and European IUCN level (Van Damme 2011 b; Killeen & Seddon 2011 b).