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

Observations on Quadrulella symmetrica

Protisten / Protisten.de – created by Wolfgang Bettighofer / Testata Amoeboid Organisms / Amoebozoa / Tubulinea / Elardia / Arcellinida / Glutinoconcha / Hyalospheniformes / Hyalospheniidae / Quadrulella symmetrica

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 Hyalospheniformes Lahr et al., 2019
●●●●●● Family Hyalospheniidae Schultze, 1877 emend. Kosakyan and Lara, 2012
●●●●●●● Genus Quadrulella (Cockerell, 1909) sensu Kosakyan, Lahr, Mulot, Meisterfeld, Mitchell and Lara, 2016

Quadrulella symmetrica (Wallich, 1863) Kosakyan, Lahr, Mulot, Meisterfeld, Mitchell and Lara, 2016

Most likely ID: n.a.

Basionym: Difflugia proteiformis var. symmetrica Wallich, 1863

Add’l Synonyms: Difflugia pyriformis var. symmetrica Wallich, 1864
                       Difflugia symmetrica Wallich, 1864
                       Difflugia assulata Ehrenberg, 1871
                       Assulina assulata Ehrenberg, 1871
                       Assulina leptolepis Ehrenberg, 1871
                       Quadrula symmetrica Schulze, 1875

Sampling date 06/2025. Scale bar indicates 25 µm.

Synopsis of test (shell) structure. Unlike most other members of the Hyalospheniidae genus, the Quadrulella species produce the siliceous scales for their tests themselves.

Place name: Wetland Paradieswiese near Kitzbühel (Tyrol, Austria)
Latitude: 47.47375067 Longitude: 12.37624884 Elevation: 777 m

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

Sampling date 06/2023. Scale bar indicates 25 µm.

Place name: Wetland Paradieswiese near Kitzbühel (Tyrol, Austria)
Latitude: 47.47375067 Longitude: 12.37624884 Elevation: 777 m

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

© 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.

Protisten.de

Observations on Quadrulella symmetrica

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