Difflugia ivorensis
Difflugia ivorensis, after Gauthier-Lièvre et Thomas, 1958
 

 
Difflugia ivorensis Gauthier-Lièvre et Thomas, 1958

Diagnosis: Test stubby, oval in cross-section, pear-shaped in frontal view, ovoid elongated in lateral view. In frontal view, the flanks converge to the pseudostome, forming a short neck. Circular pseudostome lined with well arranged small stones. The base of the test is provided with 2 to 5 horns which are only rounded growths of little length. They are all placed roughly in the same plane as can be seen in a lateral or basal view; in frontal view, they are separated by a re-entrant arch a little like that occurs in some Centropyxis species. The entire coating is stony rather coarse with, in places, larger particles, all placed on a yellowish cement.
Cytoplasm, pseudopodia and unknown nucleus.

Dimensions: Length 208-286 µm, width 183-280 µm, thickness 116-122 µm, pseudostome 38-46 µm.

Ecology: Freshwater; Africa.

Remarks: Gauthier-Lièvre and Thomas (1958): “It is curious how much this species resembles Nebela columbiana var. ivorensis Gauthier-Lièvre 1956, found in neighboring stations. We have found it useful to give a table summarizing the differences.”

 

Recent posts

Difflugia key bag-shaped

Tests that are bag or thumb-shaped Tests that are bag, finger or thumb-shaped.This group has no taxonomic significance. D. polliciformis D. lemani D. pecac D.

Read More »

Difflugia polliciformis

Difflugia polliciformis, after Van Oye, 1952 Difflugia polliciformis  Van Oye, 1958 Diagnosis: Test more or less thumb-shaped, without clear neck, chitinoid, mainly covered with very

Read More »

Difflugia australis

D. australis after Playfair, 1917 Difflugia australis (Playfair, 1917) Gauthier-Lièvre et Thomas, 1958 Syn.: Difflugia bacillariarum var. australis Playfair 1917 Diagnosis: Test broadly ovate, with

Read More »

Difflugia baradlana

D. baradlana after Varga, 1963 Difflugia baradlana Varga, 1963 Diagnosis: Test ovoid with a very small neck which is about 1/4 of the test length.

Read More »

Difflugia 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

Read More »

Difflugia algaephila

D. algaephila after Decloitre, 1977 (l) and Chardez (1980) Difflugia algaephila Decloitre, 1977 Diagnosis: Test ovoid, neatly pointed, with oblique round pseudostome. Dimensions: Length 73-75

Read More »