G. scutelliformis, Norway, 2023)
Galeripora scutelliformis (Playfair, 1918) n.comb. *)
Basionym: Arcella discoides var. scutelliformis Playfair, 1918
Diagnosis: Shell relatively higher than the type, with nicely rounded sides in cross-section. Contour regular, pseudostome circular, relatively large, sometimes with a ring of fine pores. Dorsal side rounded, without undulations. Pseudostomal invagination about half the height of the shell, without pseudopodal tube.
Dimensions: According to Playfair (1918): Shell diameter 44-95 µm; height 15-25 µm; pseudostome diameter 14-34 µm. Deflandre (1928): Length 61-82 µm; height 18-26 µm; pseudostome 17-28 µm.
Habitat: Sphagnum, submerged mosses. Australia, Europe.
G. scutelliformis, after Playfair, 1917 (L) and Ø 89 µm (Netherlands, 2016)
G. scutelliformis, Ø 74 µm (Oppad, Netherlands, 2023)
G. scutelliformis, (Sphagnum, Norway, 2023)
G. scutelliformis, (Sphagnum, Norway, 2023)
G. scutelliformis, (Sphagnum, Norway, 2023)
G. scutelliformis, (Sphagnum, Norway, 2023)
G. scutelliformis, (Sphagnum, Norway, 2023)
G. scutelliformis, Ø 83 and 89 µm (Netherlands, 2016)
*) Arcella discoides var. scutelliformis Playfair, 1918 changed to Galeripora scutelliformis (Playfair, 1918)
Note: A formal change is not required in this case according to the International Code of Zoological Nomenclature: (1) According to article 45.6.3, as the name was published before 1961 using the abbreviation var., it is deemed to be subspecific rather than infra-subspecific and therefore falls under rulings for species-group nominal taxa (Chapter 10). (2) According to article 46.1, names established at either species ranks (species or subspecies) are simultaneously established at the other rank, with same author and same type. Authority thus is unchanged.