ABSTRACT

The morphology and morphogenetic events of a new saline soil hypotrich, Cladotricha niesseniae sp. nov., collected from Huama Lake, Yulin, Shaanxi Province, China, were studied in vivo and after protargol impregnation. The new species is characterised as follows: size in vivo 75–105 µm × 20–25 µm; cortical granules absent; 24–34 adoral membranelles; three to five buccal cirri; three frontoventral cirral rows, one of which extends to about the rear sixth of the cell; one left and one right marginal row composed of 12–22 and 17–27 cirri, respectively, and usually two macronuclear nodules. The ontogenesis of the Chinese type population is basically similar to that of the population described by Nießen in 1984. In addition to the previous studies, we also provide detailed information on the formation of the dorsal kineties.