Thecamonas trahens Larsen & Patterson, 1990

Lee, Won Je, 2020, First records of nine free-living heterotrophic flagellates from South Korea, Journal of Species Research 9 (4), pp. 448-454 : 449

publication ID

https://doi.org/ 10.12651/JSR.2020.9.4.448

persistent identifier

https://treatment.plazi.org/id/0D2587DA-941D-7472-493D-EE521027F9A5

treatment provided by

Felipe

scientific name

Thecamonas trahens Larsen & Patterson, 1990
status

 

2. Thecamonas trahens Larsen & Patterson, 1990

( Fig. 1g -l View Fig )

Synonym. Amastigomonas trahens ( Larsen & Patterson, 1990) Molina & Nerad, 1991

Material examined. Korea, Gangwon-do , Gangneung-si, Sachun Beach (37°49′51″N, 128°52′42″E), 21 Oct 2017, collected by Won Je Lee. GoogleMaps

Description. Cells are ovate to elliptical and 4.5-7.1 (avg. 5.5) μm long. The proboscis (see Heiss et al., 2015) with a slow to-and-fro motion emerges from the anterior right margin of the cell, and comprises the anterior flagellum surrounded by a membranous sleeve ( Fig. 1i, 1j, 1l View Fig , arrowheads). The anterior flagellum is only visible as a dis- tinct structure within the sleeve ( Fig. 1j, 1k View Fig ). A posterior flagellum trails under the left margin, and sometimes is long enough to extend beyond the back of the cell ( Fig. 1g-1k View Fig ). It moves by a slow, even gliding. The cell body is plastic but not amoeboid, and is deformed during turn- ing. Swimming is not seen. Strands of cytoplasm may be trailed from behind the cell ( Fig. 1h, 1k View Fig , arrows). The nucleus is in the anterior left part of the cell. Food vacuoles contain bacteria and detritus.

Previously reported cell length. 4.5-7 μm ( Larsen and Patterson, 1990).

Habitat. Marine intertidal sediments.

World distribution. Australia, Hawaii, Panama, Brazil ( Larsen and Patterson, 1990), Korea.

Deposition. National Institute of Biological Resources, Korea (NIBRPR0000109148).

Identifiers. Won Je Lee.

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