world of amoeboid organisms

Menu
Difflugia azerbaijanica
Difflugia azerbaijanica, from Snegovaya and Alekperov, 2005

Difflugia azerbaijanica  Snegovaya and Alekperov, 2005

Diagnosis: Test asymmetrical, with a well-defined bifurcation from equatorial part into two halves, one of them ending with two spines and the second part, which is wider, with one spine. Spines always 3 in number, two of them located closely to each other, and the third one, slightly apart. The shell is covered with sand particles of variable shape and size; smaller particles are near the aperture. The cytoplasm is transparent. There are 1-3 wide lobopodia and several contractile vacuoles.

Dimensions: Test length with spines 160-180 µm; width 120-140 µm; pseudostome 80-90 µm; spines 20-25 µm.

Ecology: Freshwater. In a small marginal lake of the Kurakchay river basin on aquatic plants, Azerbaijan.

Remarks: According to Snegovaya and Alekperov, 2005, “…this species is closely related to D. foissneri Chardez 1987 found in freshwater basins in Belgium (Chardez, 1987). Our species differs from it in smaller shell size, asymmetric location of larger spines and a well-defined bifurcation of the aboral shell part. In our opinion, Centropyxis marsupiformis described by Brazilian specialists (Velho and Lansac-Toha, 1996) from the high Parana river could be D. foissneri or D. azerbaijanica.”
Unfortunately, the authors did not give the shell shape laterally, so correct identification cannot be done. One of the specimens described from Brazil is clearly not C. marsupiformis.

Reference: Snegovaya, N. and Alekperov, I. (2005) Fauna of testate amoebae of western Azerbaijan Rivers. Protistology 4 (2), 149-183.

Recent posts

Haplomyxa spec.

Main cell body Haplomyxa spec. Description: The cell has a central body from which numerous granuloreticulopodia emerge. The cell body can be small or large,

Read More »

Haplomyxa spec.

Haplomyxa spec. These video’s show an undescribed Haplomyxa species which was collected from a mesotrophic freshwater pond in the Netherlands, January 2020, and kept in Petri

Read More »

Chlamydophrys-schaudinn

Fritz Schaudinn (1871 – 1906) was a German zoologist. He was the co-discoverer of the causative agent of syphilis and did research on amoebas, particularly

Read More »

Alabasta longicollis

Alabasta longicollis, after Penard, 1890 Alabasta longicollis  (Penard, 1890) Diagnosis: Test pyriform, very elongated (3 times as long as wide), transparent, very little compressed, embedded

Read More »

Alabasta kivuense

Alabasta kivuense, after Gauthier-Lièvre and Thomas, 1961 Alabasta kivuense  Gauthier-Lièvre and Thomas, 1961 Diagnosis: In frontal view, the test is finger-shaped with subparallel sides, the

Read More »

Paulinella micropora

Paulinella micropora, – from Lhee et al., 2017 Paulinella micropora Lhee, Yang, Kim, Andersen & Yoon, 2017 Diagnosis: Test elongate, with five columns of scales,

Read More »