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. 

Recent posts

Centropyxiella oopyxiformis

  Centropyxiella oopyxiformis, after Chardez, 1977   Centropyxiella oopyxiformis  Chardez, 1977 Diagnosis: Test elongated, dorso-ventrally compressed, fundus always smaller than the anterior part with an

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Centropyxiella lucida

  Centropyxiella lucida, after Golemansky, 1971   Centropyxiella lucida  Golemansky, 1971 Diagnosis: In ventral view, test elliptical with almost parallel sides with regular round ends.

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Centropyxiella golemanskyi

  Centropyxiella golemanskyi, after Chardez, 1977   Centropyxiella golemanskyi  Chardez, 1977 Diagnosis: In dorsal view, main part of the test almost circular, in lateral view

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Centropyxiella gibbulina

  Centropyxiella gibbulina, after Chardez et Thomas, 1980   Centropyxiella gibbulina  Chardez et Thomas, 1980 Diagnosis: Main part of the test almost spherical, with funnel-shaped

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Centropyxiella gibbula

  Centropyxiella gibbula, after Valkanov, 1970   Centropyxiella gibbula  Valkanov, 1970 Diagnosis: Main part of the test almost spherical, with funnel-shaped circular pseudostome. Test covered

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Centropyxiella elegans

  Centropyxiella elegans, after Chardez, 1980 (l) and 1984 (r)   Centropyxiella elegans  Valkanov, 1970 Diagnosis: Test ovoid, strongly flattened, covered with small mineral grains.

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