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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Wingrella

Wingrella Wiszniewski, 1932

Synonym Wigrella Wiszniewski (ref. ID; 1923)

ref. ID; 1923

Body greatly depressed. Trophi forcipate, with small pieces intercalated between manubrium and uncus, or with manubrium attached to ramus. (ref. ID; 1923)
  1. Wingrella amphora (Remane, 1929) (ref. ID; 1345, 2019)
    Syn; Encentrum amphora Remane, 1929 (ref. ID; 1345, 2019); ?Encentrum longirostrum Tzschaschel, 1978 (ref. ID; 2019); Wingrella amphora Wiszniewski, 1934 (ref. ID; 1345)
  2. Wingrella depressa Wiszniewski, 1932 (ref. ID; 1345, 1923, 2019), Wigrella depressa Wiszniewski, 1932 (ref. ID; 3688, 6939)

Wingrella depressa Wiszniewski, 1932 (ref. ID; 1345, 1923, 2019), Wigrella depressa Wiszniewski, 1932 (ref. ID; 3688, 6939)

Descriptions

Female: The body is strongly flattened dorsally and transparent. As it was described by Wiszniewski in 1934, this rotifer clearly at first resembles a Dicranophorus. The same author reported that the lorica is not divided into plates and that when the animal moves, 2 longitudinal folds can be distinguished. The specimens found in the gravel stream Oberer Seebach have these folds, but also longitudinal ribs. The rostrum is wide and curves strongly ventrally. The foot has two segments and long strong toes. In ventral view the toes are distinctly inserted into a kind of plate and they diverge. According to Wiszniewski's description, the trophi resemble those of the genus Encentrum. They are symmetric with pointed rami without teeth, and a long fulcrum. The manubria are long, with kob-like posterior ends. The intramallei are oval and the unci are strong, ending acutely pointed. (ref. ID; 6939)

Habitats

The habitat where it was found is the lake psammon. In the gravel steam Oberer Seebach this animal lives at the sediment surface as well as in the hyporheic zone (sometimes seen at depths of 30-40 cm). (ref. ID; 6939)

Examined materials

The specimens were colleced from the sediments using either stand pipe traps or surber samplers in the gravel stream Oberer Seebach. (ref. ID; 6939)

Measurements

Total length: 140 µm, toes 35-38 µm, trophi length: 20 µm, fulcrum: 5 µm, manubria: 14 µm, unci: 6 µm. (ref. ID; 6939)