| Vorticella aquadulcis: species with ellipsoid macronucleus. |
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| Vorticella aquadulcis: focus plane on the coarse pellicle striation. |
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| Vorticella aquadulcis: another specimen; focus plane on the short stalk; optical cross-section of the striated pellicula. |
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| Location: NSG Heiliges Meer; Großes Heiliges Meer, NRW; Germany |
| Habitat: plankton, epibiontic on Asterionella formosa |
| Date: 06.04.2018 |
