Lagenodifflugia bryophila
From Penard, 1902

 

 

Lagenodifflugia bryophila (Penard, 1902)

 

Diagnosis: test pyriform, slightly bend, with a constriction of the neck. Test circular in cross-section, composed of mineral particles and diatom frustules, embedded in an organic cement. Aperture circular; internally the test is partitioned into two regions by a diaphragm constructed as part of the shell wall but having a single central orifice.

 

Dimensions: Penard: 100-125 µm long; my measurements: 132 µm long

 

Ecology: ditches, between detritus.

 

Remarks: I am not fully convinced of my identification with Lagenodifflugia bryophila, but this is the closest species.

 

Lagenodifflugia bryophila
Lagenodifflugia bryophila
The arrow points to the opening in the diaphragm, visible through the neck wall, and opening in the diaphragm
Lagenodifflugia bryophila
Lagenodifflugia bryophila
The structure of the test resembles those of Lesquereusia spiralis

Lagenodifflugia bryophila