Difflugia carinata
Difflugia carinata, after Van Oye, 1956

Difflugia carinata  Van Oye, 1956

Diagnosis: Test in cross-section slightly compressed; however, the presence of a carina built up by a single row of sand-grains gives to the whole an aspect as if it were much more compressed than it actually is; indeed, without carina, the body is but very slightly compressed. On the fundus of the test, the carina may be built out of two rows of sand-grains, while there is but a single row on the lateral sides. The sand-grains on the body-surface are as numerous as in most Difflugia-species. The mouth-margin is built up by an irregular series of sand-grains. The keel makes a circle around the test and continues till ¼ of the length of the test, beginning from the aperture.

Dimensions: Length 92 µm; width 52 µm; aperture 18 µm.

Ecology: Freshwater. Sphagnum swamp, Dunedin, New Zealand.

Reference: Van Oye, P., 1956. On the Thecamoeban fauna of New Zealand with description of four new species. Hydrobiologia, VIII, 1-2.

 

Recent posts

Cryptodifflugia key 2

1 Shell is distinctly compressed laterally 2 – Shell is not compressed or slightly compressed laterally 7 2 Oval aperture C. compressa angustioris – Circular

Read More »

Campascus cyphoderiformis

Campascus cyphoderiformis – After Chardez et Gaspar, 1984 Campascus cyphoderiformis  Chardez et Gaspar, 1984 Diagnosis: Test very clear, hyaline, consisting of endogenous scales of 1.2

Read More »

Campascus insterstitialis

Campascus interstitialis – After Golemansky, 1981 Campascus interstitialis  Golemansky, 1981 Diagnosis: Test elongated, in the shape of a bottle with a curved, colorless, transparent and

Read More »

Campascus triqueter

Campascus triqueter – After Penard, 1899 and 1891 Campascus triqueter  Penard, 1899 Diagnosis: Test brownish or yellowish, build of organic material embedded with a large

Read More »

Campascus bidens

Campascus bidens – After Krascheninnikov, 1923 Campascus bidens Krascheninnikov, 1923 Diagnosis: Test as C. minutus, but with, in ventral view, two small tooth-like projections, facing

Read More »

Campascus dentatus

Campascus dentatus – After Edmondson and Kingman, 1913 Campascus dentatus Edmondson and Kingman, 1913 Diagnosis: Shell of yellowish, chitinoid material similar in general outline to

Read More »