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“Lachmannia” spec., body length 127 µm

“Lachmannia” spec.

I found two cells, size about 125 µm when ovoid, with an organic-walled membranous test and a single terminal aperture. The test is hyaline and colorless, flexible, smooth and delicate. From a long peduncle some long branching and anastomosing granuloreticulopodia radiate. Cytoplasm in continuous streaming, with many small granules, bi-refringent yellowish rod-shaped crystals  and food vacuoles. It was not possible to detect any nuclei but there were no large nuclei as described for Lieberkuehnia paludosa by Penard, 1907.

Measurements: 127 µm (n=1)

Ecology: Freshwater; on submerged rock at the base of the dike along the northern part Gooimeer (Lake Gooi), the Netherlands, May 2020 (52°18’17.7″N 5°18’51.6″E).

Remarks: I found only two specimens. One was lost when isolated, the other was sequenced by Maria Holzmann with the result that it belongs to Group 4 and is related to genera  Lieberkuenia and Claparedellus. However, it will be described as a new species with a new genus. The name “Lachmanni” is a worktitle.

Lieberkuehnia
Cytoplasm with yellowish crystals
Lieberkuehnia
Cytoplasm with yellowish crystals
Lieberkuehnia
Specimen attached to debris (arrowed)
Lieberkuehnia
This Lieberkuehnia species was collected between these basalt rocks at the base of a dike.
Lieberkuehnia
Lake Gooi, the Netherlands
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