This location is an large ditch in the nature reserve Naardermeer, in the southern part. My samples came from floating debris in springtime and bottom sediments. The exact location is: GPS 52.28133, 5.11887 (see arrow). The site is located in the centre of the Netherlands.

Remarkable species in this ditch:

Sample location indicated by arrow.
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Recent posts

Lesquereusia gibbosa

May 26, 2019

L. gibbosa, after Thomas and Gauthier-Lièvre, 1959 Lesquereusia gibbosa Thomas et Gauthier-Lièvre, 1959 Diagnosis: At the base of the neck there is a clear constriction,

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Lesquereusia extranea

May 26, 2019

L. extranea, after Thomas and Gauthier-Lièvre, 1959 Lesquereusia extranea Awerintzew, 1906 Diagnosis: Generally, the test resembles that of L. epistomium, but it also presents intermediate

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Lesquereusia carinata

May 25, 2019

L. carinata. The two small drawings to the left are after Playfair, 1917, the others after Thomas and Gauthier-Lièvre, 1959. Lesquereusia carinata Playfair, 1917 Diagnosis:

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Lesquereusia bispiralis

May 25, 2019

L. bispiralis, after Thomas and Gauthier-Lièvre, 1959 Lesquereusia bispiralis Thomas et Gauthier-Lièvre, 1959 Diagnosis: Neck with two septa. The neck is not cylindrical or conical,

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Lesquereusia angulata

May 25, 2019

L. angulata, after Thomas and Gauthier-Lièvre, 1959 Lesquereusia angulata Awerintzew, 1906 Diagnosis: The neck is long and straight and does not taper towards the aperture;

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Lesquereusia globulosa

May 25, 2019

L. globulosa, after Thomas and Gauthier-Lièvre, 1959 Lesquereusia globulosa Thomas et Gauthier-Lièvre, 1959 Diagnosis: Main part of the test spherical, not compressed, with a large

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