Antetetmemena Omar & Jung, 2024, gen. nov.

Antetetmemena gen. nov. ZooBank registration: urn:lsid:zoobank.org:act: 397A6BA8- 85E8-40D5-8C10-5009A280DB2A. Diagnosis: Stylonychine with medium to large body size. Body ellipsoid with parallel margins, posterior body end rounded to truncated to right. Eighteen FVT cirri. Transverse cirri in two groups of three left and two right. One right and one left row of marginal cirri. Six dorsal kineties, including two dorsomarginal rows; kinety 3 with simple fragmentation. Three narrowly spaced caudal cirri, slightly shifted to right, one each at posterior end of kineties 1, 2, and 4. Frontal area narrow, bearing frontal cirri, left frontal cirrus located in or left of the midline of the body. Adoral zone usually occupies <50% of body length. Undulating membranes in Stylonychia pattern, but slightly curved. Oral primordium originates left to leftmost transverse cirrus. Cirrus IV/3 produces anlagen IV–VI of the proter, cirri III/2, IV/2, and V/4 involved in primordia formation. 18S rRNA gene: 268 (C); 698 (A); 709 (T); 1405 (A); 1519 (A). Etymology: composite of the Latin prefix ante (temporal: before) and the genus-group name Tetmemena, indicating that the species included were previously classified in Tetmemena. Feminine gender. Type species: Antetetmemena minima (Kumar et al., 2016) comb. nov. (original combination: Tetmemena bifaria minima Kumar et al., 2016). Species assignable: Antetetmemena minima (Kumar et al., 2016) comb. nov. and Antetetmemena bifaria (Stokes, 1887) comb. nov. (original combination: Oxytricha bifaria Stokes, 1887).