Subclass Heterodonta Suborder Sphaeriacea Rank Species | Order Veneroida Higher classification Pisidium | |
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Similar Pisidium subtruncatum, Pisidium milium, Pisidium, Pisidium henslowanum, Pisidium casertanum | ||
Pisidium nitidum or the "shining pea clam" is a species of minute freshwater clam, an aquatic bivalve mollusc in the family Sphaeriidae, the pea clams and fingernail clams.
Contents
Description
The 3 - 4 mm. shell is slightly tumid (swollen). In shape it is regular-oval with low umbos slightly behind the mid point. The umbonal area is demarcated by three concentric furrows. The surface (periostracum) is very glossy, with prominent irregularly spaced concentric striae. The colour is yellowish.
Distribution
Its native distribution is Holarctic.
References
Pisidium nitidum Wikipedia(Text) CC BY-SA