Microworld

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

Penardochlamys arcelloides

P. arcelloides – from Penard, 1904 Penardochlamys arcelloides  (Penard, 1904) Deflandre, 1953 Diagnosis: Colorless or very slightly yellowish envelope, bag or cauldron-shaped, very thin, chitinous,

Read More »

Reticulomyxa hannae

R. hannae, plasmodium – photomicrograph Steffen Clauss Reticulomyxa hannae Völcker and Clauß, 2020 Diagnosis: Trophozoites surrounded by a very thin mucous envelope, with slowly moving plasmodia, variable

Read More »

Velamentofex saxonensis

V. saxonensis, feeding (photomicrograph Steffen Clauss) Velamentofex saxonensis Völcker and Clauß, 2020 Diagnosis: Trophozoites ovoid, 30-95 μm, granuloreticulopodia up to 1000 μm long. with a hyaline, thin

Read More »

Velamentofex tyrolensis

V. tyrolensis (photomicrograph Steffen Clauss) Velamentofex tyrolensis Völcker and Clauß, 2020 Diagnosis: Trophozoites ovoid, 98-125 μm, with reticulopodia up to 300 μm long, with a hyaline,

Read More »

Velamentofex berolinensis

V. berolinensis Velamentofex berolinensis Völcker and Clauß, 2020 Diagnosis: Trophozoites ovoid, 50-300 µm, with a hyaline, extremely flexible, membranous test. Nuclei numerous, 11.6-16.2 µm in diameter,

Read More »

Lieberkuehniidae

 Lieberkuehniidae  Siemensma, Holzmann, Apothéloz-Perret-Gentil, Clauß, Voelcker, Bettighofer, Khanipour Roshan, Walden, Dumack and Pawlowski, 2020 Diagnosis: Multinucleate organic-walled monothalamous foraminifera. Test very flexible, elongated to broadly

Read More »