Testate Amoebae –
Amoebozoa (Part), Stramenopiles (Part), Rhizaria (Part)

Observations on Arcella crenulata

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Taxonomic tree according to Lahr et al., 2019 (https://doi.org/10.1016/j.cub.2019.01.078)
and González-Miguéns et al., 2022 (https://doi.org/10.1016/j.ympev.2022.107557)

Amorphea Adl et al., 2012
Amoebozoa Lühe, 1913, renewed definition Cavalier-Smith, 1998
● Tubulinea Smirnov et al., 2005
●● Elardia, Kang et al., 2017
●●● Order Arcellinida Kent, 1880
●●●● Suborder Glutinoconcha Lahr et al., 2019
●●●●● Infraorder Sphaerothecina Kosakyan, Lara and Lahr, 2016
●●●●●● Family Arcellidae Ehrenberg, 1843
●●●●●●● Genus Arcella Ehrenberg, 1832

Arcella crenulata Deflandre, 1928

Most likely ID: n.a.

Basionym: n.a.

Add’l Synonyms: n.a.

Note: The species was described by Deflandre (1928) as Arcella vulgaris var. crenulata.

Sampling date 06/2025. Scale bars indicate 100 µm.

Four images.

Please click on < or > on the image edges or on the dots at the bottom edge of the images to browse through the slides!

Place name: Moor called Schwemm near Walchsee (Tyrol, Austria)
Latitude: 47.657707 Longitude: 12.299540 Elevation: 669 m

Stereo microscope Olympus SZX16, camera Olympus OM-D M5 MKII. DOF images.

Sampling date 06/2025. Scale bars indicate 50 µm.

Two views into the aperture. The first image focuses on the bottom of the shell, the second on the lid of the shell, which was visible through the aperture.

Please click on < or > on the image edges or on the dots at the bottom edge of the images to browse through the slides!

Place name: Moor called Schwemm near Walchsee (Tyrol, Austria)
Latitude: 47.657707 Longitude: 12.299540 Elevation: 669 m

Microscope Zeiss Axioplan, camera Olympus OM-D M5 MKII. DOF images.

Sampling date 06/2025. Scale bars indicate 10 µm.

Close-ups of the images shown above. The building units of the Arcella shell are clearly visible, a rarity in light microscopic images of Arcella shells.

Please click on < or > on the image edges or on the dots at the bottom edge of the images to browse through the slides!

Place name: Moor called Schwemm near Walchsee (Tyrol, Austria)
Latitude: 47.657707 Longitude: 12.299540 Elevation: 669 m

Microscope Zeiss Axioplan, camera Olympus OM-D M5 MKII. DOF images.

© Wolfgang Bettighofer,
images under Creative Commons License V 3.0 (CC BY-NC-SA).
For permission to use of (high resolution) images please contact postmaster@protisten.de.

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Observations on Arcella crenulata

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