world of amoeboid organisms

Menu
Difflugia bacillifera

 

Difflugia bacillifera, from different locations.

 

Difflugia bacillifera Penard, 1890

Diagnosis: Test ovoid, flask-shaped or elongate with a distinct, long, cylindrical neck, not compressed, with a smooth fundus; neck variable in length; neck usually a little widened towards the aperture; shell mainly or completely composed of diatoms, which are sometimes scattered with sand particles or foreign bodies such as minute tests of siliceous flagellates or rhizopoda, e.g. Euglypha; shell usually transparent, light brown or yellow. Aperture circular.

Dimensions: Length 117-194 µm, Penard mean 158 µm; Awerinzew 150-190 µm; Cash 145-160 µm; Jung 145-180 µm; Hoogenraad & De Groot 120-180 µm.

Ecology: Sphagnum pools and mosses. Not rare.

Remarks: Outline often masked by the diversity of diatom frustules that are incorporated into the structure, and in some instances the whole of the shell may appear to be an amalgamation of diatoms. The siliceous materials used vary from diatom frustules almost equal in length to the body of the shell, to small frustules about 10 um long, and spherical siliceous cysts of chrysomonad flagellates.

 
Difflugia bacillifera, 170 µm long, Tirol, Austria
Difflugia bacillifera - Ferry Siemensma
Difflugia bacillifera, 236 µm – Diepveen, The Netherlands
Difflugia bacillifera – Tirol, Austria
Difflugia bacillifera, 220 µm – Tirol, Austria
Difflugia bacillifera, 176 µm – Tirol, Austria
Difflugia bacillifera, Sweden

 

Recent posts

Spiculophrys

Genus Spiculophrys Zlatogursky, 2016 Diagnosis: Centrohelids lacking silica scales but with numerous thin, pointed organic (without any traces of silica) scales tapering towards acute apices. 18S

Read More »

Acanthocystis drakena

From Zlatogursky, 2016 Acanthocystis drakena Zlatogursky, 2016 Diagnosis: Cells are 21.1-30.5 µm (ca. 26.7) in diameter. Cell is covered with oval plate-scales having a margin

Read More »

Choanocystis symna

From Zlatogursky, 2014 Choanocystis symna Zlatogursky, 2014 Diagnosis: Cell body ca. 6.7 µm in diameter. Axopodia three–five times longer than a cell diameter. Plate-scales dumbbell-shaped

Read More »

Acanthocystis costata

From Zlatogursky, 2014 Acanthocystis costata Zlatogursky, 2014 Diagnosis: Cell body ca 9.5 µm in diameter. Axopodia 2–3 times longer than cell diameter. Length of spine-scales

Read More »

Kinetocyst

Left: ultra-structure of a kinetocyst of Raphidiophrys contractilis); right: two kinetocysts in an axopodium. Kinetocysts In centrohelid heliozoa, extrusomes are called kinetocysts, and are present

Read More »

Yogsothoth carteri

Yogsothoth carteri, after Shishkin and Zlatogursky, 2018 Yogsothoth carteri Shishkin and Zlatogursky, 2018 Diagnosis: Individual cells in a colony have a diameter of 9.7-15.2 µm;

Read More »