world of amoeboid organisms

Menu
Trinema galeata
Trinema galeata, after Todorov and Bankov, 2019 (l) and Jung, 1942 (r)

Trinema galeata (Penard, 1890) Jung, 1942

Diagnosis: Shell small, colourless, transparent, ovoid, compressed, with oval transverse section; composed of two types of shell-plates: large, circular, slightly overlapping, of about 10 µm in diameter, and small, oval, of about 3,1-3,4 x 2,4-2,7 µm, which haphazardly fill interstices between large plates. Aperture oval, sub-terminal, oblique, invaginated, surrounded by two or three rows small, circular, denticulate apertural-plates and three to four rows of small shell-plates, which clearly indicate the place of junction of the wide apertural visor with the main body. Cytoplasm granular, fills almost the whole shell; one large nucleus, placed posteriorly in the cell, with single central nucleolus. Pseudopodia numerous, thin, long, sometimes branching, usually well visible.

Dimensions: 41-84 um long; 22-49 µm wide; large scales about 10 µm in diameter, small ones 3,1-3,4 x 2,4-2,7 µm.  diameter of large shell-plates 5.6-10.3; aperture 11-24 µm (Todorov and Bankov, 2019).

Ecology: Mosses and soils, rare in Sphagnum. Probably cosmopolitan.

Remarks: Trinema galeata differs from T. complanatum by the well visible line indicating the place of junction of the wide apertural visor with the main body.

Trinema galeata
Trinema galeata
Trinema galeata, wet moss in my garden pond, the Netherlands 2019
Trinema galeata
Trinema galeata
Recent posts

Sphenoderia compressa

Sphenoderia compressa, after Badewitz, 2002 Sphenoderia compressa Badewitz, 2002 Diagnosis: Test ovoid, oval in cross section, hyaline, covered with relatively small, oval, rather irregularly arranged

Read More »

Tracheleuglypha elongata

T. elongata, A-C after Thomas and Gauthier-Lièvre, 1959; D after Van Oye, 1959 Tracheleuglypha elongata Van Oye, 1959 Diagnosis: Test similar to T. dentata, but

Read More »

Tracheleuglypha acolla

T. acolla, after Bonnet and Thomas, 1960 Tracheleuglypha acolla Bonnet and Thomas, 1955 Diagnosis: Test ovoid, non compressed, round in cross-section, with large oval overlapping

Read More »

Cyclopyxis kahli oblonga

C. kahli f. oblonga , after Tarnogradskii, 1959 Cyclopyxis kahli f. oblonga  (Tarnogradskii, 1959) Centropyxis kahli f. oblonga Tarnogradskii, 1959 Diagnosis:  Test with all the

Read More »

Cyclopyxis leclercqi

Cyclopyxis leclercqi – from Beyens and Chardez, 1986 Cyclopyxis leclercqi Beyens and Chardez, 1986 Diagnosis: Shell circular in apertural view, dorso-ventrally compressed with a swollen

Read More »

Haplomyxa saranae

Haplomyxa saranae Dellinger, 2014 Diagnosis: cell body from small rounded (0.1 mm) to large elongated shape (up to 3.5 x 0.3 mm), usually flat but

Read More »