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

Cyclopyxis magna

Cyclopyxis magna – from Stepanek, 1967 Cyclopyxis magna Stepanek, 1967 Diagnosis: Test relatively high, covered with large mineral grains. The edge of the pseudostome is

Read More »

Cyclopyxis marinus

Cyclopyxis marinus – from Decloitre, 1977 Cyclopyxis marinus Decloitre, 1977 Diagnosis: Compared to Cyclopyxis aplanata the pseudostome is very minimally invaginated. It is surrounded by

Read More »

Cyclopyxis triangularistoma

Cyclopyxis triangularistoma – from Decloitre, 1980 Cyclopyxis triangularistoma Decloitre, 1980 Diagnosis: Ventral side exclusively covered with very small mineral grains, giving it a pearled appearance.

Read More »

Cyclopyxis pirini

Cyclopyxis pirini – from Golemansky 1974 Cyclopyxis pirini Golemansky 1974 Diagnosis: Ventrally, the test is circular. Laterally, the test is low hemispherical with a more

Read More »

Cyclopyxis eurystoma alta

C. eurystoma f. alta, after Jung, 1942 Cyclopyxis eurystoma f. alta  Jung, 1942 Diagnosis:  Test and coverage as the type. However, the side profile is

Read More »

Cyclopyxis kahli crucigenia

C. kahli var. crucigenia, after Stepanek, 1963 Cyclopyxis kahli var. crucigenia  Stepanek, 1963 Diagnosis:  This variety differs from the type by a small and highly

Read More »