Abstract
A new urostylid ciliate, Holostichides (Holostichides) parachardezi, collected from a Chinese tropical city, was studied using morphological and molecular methods. Diagnostic features of the new species include: size 140–180 × 30–60 μm in vivo; 25–43 macronuclear nodules; colourless cortical granules; three to six frontoterminal cirri; a midventral complex composed of seven to eleven cirral pairs and one midventral row of five to eleven cirri; four bipolar dorsal kineties and six to nine caudal cirri in four groups; and a terrestrial habitat. Its ontogenesis follows the typical Holostichides mode in that (1) the proximal portion of the parental adoral zone of membranelles is partly renewed and the opisthe’s oral primordium originates very close to the midventral complex; (2) the last anlage n generates the frontoterminal cirral row, and the midventral complex is formed from anlage IV to n − 1; and (3) both marginal rows and dorsal kinety anlagen develop within the parental rows. The present SSU rDNA phylogenies corroborated the monophyly of the genus Holostichides.
Published Version
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