Ditrema spec.
Ditrema cf. longicollis
Diagnosis: Shell as with D. longicollis, but slightly elongated. Nucleus not observed.
Dimensions: length 27 µm, from aperture to aperture.
Ecology: Fresh water, with Sphagnum contact. Crailoo
Ferry Siemensma, created March 3, 2019; last modified October 29, 2024