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