Although Linostomella vorticella is described as a common species, I have only observed this species a few times in the plankton from the Mühlweiher Litzelstetten and in the pond of the waste disposal company Constance.

In the samples, Linostomella vorticella is easy to recognize by its sack-shaped body with an obliquely truncated front end. The specimens swim quickly and often appear opaque due to the many food vacuoles filling the body. Their preferred food includes Euglena, Chlamydomonas, Chilomonas, Eudorina, and Pandorina.

The mouth opening occupies the entire front half of the body. It is funnel-shaped with a V-shaped, ventral notch. The adoral zone of membranelles is located on the left side and has the shape of a question mark, while the large undulating membrane occupies the right margin of the mouth opening. The terminal contractile vacuole is often difficult to detect due to the mass of food vacuoles in the cytoplasm. The macronucleus is moniliform and consists of 6–10 nodules. In my specimens, there were mostly 6–8 nodules. Even in strongly squashed specimens, I could not detect any micronuclei. Earlier authors also do not mention or describe any. They are either very small or scattered in the cytoplasm and thus difficult to identify there.