Tracheleuglypha elongata (Playfair, 1917) *)
Basionym: Euglypha dentata var. elongata Playfair, 1917
Diagnosis: Test elongate, elliptical or subcylindrical, often asymmetrical, circular in section, rounded behind; sides gently arched, often nearly parallel, converging to the aperture. Aperture chitinous, fimbriated, rarely angular or straight-edged. Body-scales always perfectly circular, quincuncially arranged, very slightly overlapping and equally on all sides (after Playfair, 1917).
Dimensions: Playfair, 1917: Length 44–51 µm; width 21–25 µm; aperture 8–10 µm; scales 6 µm; L/W 2.04–2.09.
Thomas and Gauthier-Lièvre, 1959: Length 60–73 µm; width 24–35 µm; aperture 10–15 µm; L/W 2.09–2.50.
Ecology: Mosses, marshes, acid waters.
Geographical distribution: Australia, Africa, Austria (Bettighofer, 2026, unpublished).
*) Taxonomic Note: No new name needs to be established in this case under the International Code of Zoological Nomenclature. Because the name was published before 1961 using the abbreviation var., it is deemed subspecific under Article 45.6.4, unless explicitly proposed as infrasubspecific. As a species-group name, it is simultaneously established at both species and subspecies rank under the Principle of Coordination (Art. 46.1), with the same author, date, and name-bearing type. Accordingly, when treated at species rank, the correct name is Tracheleuglypha elongata (Thomas & Gauthier-Lièvre, 1959).
