Sphaerium lacustre

The umbos which are capped by the juvenile shell are slightly in front of middle directed forwards.

The posterior end is broad and truncated.

The shell is fragile, fairly glossy and pearl grey to white in colour.

The periostracum (surface) is ornamented with fine, even, concentric striation.

The native distribution of this species is Holarctic and occurs in islands and countries including: