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An interesting group of testate amoebae is the genus Difflugia. There have been described hundreds of species, but the question is: how many of them are true species? Most descriptions are inaccurate of just based on one single test. Probably this group consists of several genera. Only DNA sequencing can help here. One of my projects is to make a visual map of all known species. It’s one of the most difficult taxa to identify. 

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Netzelia levanderi

Difflugia levanderi , after Playfair, 1918 Difflugia levanderi  Playfair, 1918 Diagnosis: Test lance-oblong or mitriform (shaped like a bishop’s miter), short and broad, fundus shaped

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Netzelia angelica

D. angelica after Gauthier-Lièvre et Thomas, 1960 Difflugia angelica Gauthier-Lièvre et Thomas, 1960 Diagnosis: Test spherical, slightly mammillated. Pseudostome regularly lobed like a star with

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Test

fgdfgdfgfgfgfg fgdfgfd fg dfgfd gfdg fdg C. lunaristoma – from Coûteaux et Chardez, 1981 fdgdfgdfgfdgfgdfgfgf fgdgfdgfd gfdg dfgdf C. lunaristoma – from Coûteaux et Chardez,

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Frenopyxis bipilata

F. bipilata, Croatia, Tamnica Frenopyxis bipilata  (Baković, Siemensma, Baković and Rubinić, 2019) comb. n. Diagnosis: In dorsal view, the test is rounded and usually slightly wider

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Darbyshirella terrestris

D. terrestris, after Berney et al., 2015 Darbyshirella terrestris  Berney, Bass & Geisen, 2015 Diagnosis: Non-marine, with morphological characteristics of the genus. Usually above 600 um

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Acanthocystis elenazhivotovae

A. elenazhivotovae – from Leonov, 2010 Acanthocystis elenazhivotovae  Leonov, 2010 Diagnosis: Cell diameter 22-25 µm. Periplast with tangential plate-scales and radial spine-scales. Spine-scales 3.2-6.0 µm,

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