Pompholyxophrys stellata
(Nicholls & Dürrschmidt, 1985)
Most likely ID: n.a.
Synonym: n.a
Sampling location: Simmelried
Phylogenetic tree: Pompholyxophrys stellata
Diagnosis:
- cell spherical, diameter 24–65 µm (inclusive layer auf scales)
- covered with flattened, oval scales
- scales oval in frontal view, length 3.0–5.4 µm X width 1.6–3.5 µm
- scales slender oval in lateral view, in the middle often swollen.
- cytoplasm orange or reddish with colored granules
- feeding on algae
- nucleus located eccentrically, with central nucleoulus
- no visible contractile vacuole
- pseudopodia fine and short
No drawings from previous authors available.
I have found Pompholyxophrys stellata so far exclusively in the Simmelried. The finds are from January 1997, February 2012 and July 2014. After that I did not find any more specimens. The species can be easily distinguished from Pompholyxophrys punicea by the flattened scales. In lateral view the scales appear very flat oval, sometimes somewhat thickened in the middle. In plan view they are oval. Otherwise, the species appears to have the same characteristics as Pompholyxophrys punicea.
Fig. 1 a-b: Pompholyxophrys stellata. D = 40 µm (of the squashed specimen). Two focal planes of a slightly squashed specimen. Note that some of the flat scales in lateral view are “swollen” in the middle (a, arrwos). In plan view the scales appear oval (b). Nu = nucleus. Obj. 100 X.
Fig. 2 a-b: Pompholyxophrys stellata. D = 54 µm (of the squashed specimen). Two focal planes of a slightly squashed second. In plan view the flat scales are oval (b, arrows). PP = pseudopodia. Obj. 100 X.