Choanocystis symna Zlatogursky 2014, sp. nov. ...

• Main Author: Zlatogursky, Vasily V.
• Format: Text
• Language: unknown
• Published: Zenodo 2014
• Subjects: Biodiversity; Taxonomy; Chromista; Heliozoa; Centrohelida; Acanthocystidae; Choanocystis; Choanocystis symna; North-Western Russia
• Online Access: https://dx.doi.org/10.5281/zenodo.10371159; https://zenodo.org/doi/10.5281/zenodo.10371159

Choanocystis symna sp. nov. (Figs 3, 4) Diagnosis: Cell body ca. 6.7 µm in diameter. Axopodia three–five times longer than a cell diameter. Plate scales dumbbell-shaped with a median constriction. Circlular lines, parallel to the border of the scale sometimes can be seen. The shafts of spine scales can be straight, but usually it is slightly curved towards the scale base. Length of plate scales 4.4–5.0 µm (ca. 4.7 µm); width 1.62–1.90 µm (ca. 1.71 µm). Spine scales with heart-shaped bases. Sometimes a small circular depression is located on the base at the place of the shaft location. Distal ends of spine scales bear from three to five (usually four) short teeth. Length of spine scales 3.9–6.7 µm (ca. 5.1 µm). Cells tightly attach to the bottom of Petri dish or, very rarely, float. No rolling movement was observed. Etymology: The species–group name symna refers to the name of type location – Lake Symniakhovskoe. Type locality: Lake Symniakhovskoe, Valamo island, North-Western Russia, 61°22′912″N, ... : Published as part of Zlatogursky, Vasily V., 2014, Two New Species of Centrohelid Heliozoans: Acanthocystis costata sp. nov. and Choanocystis symna sp. nov., pp. 313-324 in Acta Protozoologica 53 (4) on page 319, DOI: 10.4467/16890027AP.14.021.1776, http://zenodo.org/record/10371188 ...