Naardermeer Noord
This location is an isolated ditch in the nature reserve Naardermeer, in the northern part. My samples came from waterplants and from bottom sediments. They were rich on iron bacteria. The exact location is: GPS 52.30460, 5.11635 (see arrow). The site is located in the centre of the Netherlands.
Remarkable species in this ditch:
Cyclopyxis arenata – after Boltovskoy and Lena, 1966 Cyclopyxis arenata (Cushman, 1930) Boltovskoy, 1956 Basionym: Pseudarcella arenata Cushman, 1930 Diagnosis: Hemispherical shell. Convex dorsal side,
C. impressa C. impressa C. stellata C. stellata C. crucistoma C. crucistoma C. crucigenia C. crucigenia C. grospietschi C. grospietschi C. triquestrus C. triquestrus C.
Cyclopyxis profundistoma – from Kufferath, 1932 Cyclopyxis profundistoma Kufferath, 1932 Diagnosis: The yellowish grey colored test is made of coarser mineral particles, which are connected
Cyclopyxis maynei – from Kufferath, 1932 Cyclopyxis maynei Kufferath, 1932 Diagnosis: Test cylindrical, characterized by the size of the aperture, which is 87-97 μm wide
C. kahli var. obliqua , after Decloitre, 1978 Cyclopyxis kahli var. obliqua Decloitre, 1978 Diagnosis: Test with all the characteristics of the type species
C. arcelloides var. ghesquierei , after Kufferath, 1932 Cyclopyxis arcelloides var. ghesquierei Kufferath, 1932 Diagnosis: This variety differs from the type species in its