First records of nine free-living heterotrophic flagellates from South Korea Author Lee, Won Je wonje@kyungnam.ac.kr text Journal of Species Research 2020 9 4 448 454 journal article 10.12651/JSR.2020.9.4.448 2713-8615 13140788 7. Paracercomonas astra Howe & Cavalier-Smith, 2009 ( Fig. 3a -f ) Material examined. Korea , Gyeongsangnam-do , Changwon , Jinjuncheon Stream ( 35°06′02″N , 128°26′04″E ), 4 Apr 2012 , collected by Won Je Lee. Description. Cells are 5.7-7.3 (avg. 6.6) μm long and moderately metabolic. The anterior flagellum is about the cell length, tapered or acronematic, and the posterior flagellum is about the cell length, difficult to see and at- tached. Sporadic finger-like or filose cytoplasmic strand is tailed ( Fig. 3c-3f , arrowheads). Lamellar and/or branch- ing pseudopodia are seen at the posterior part of the cell and finger-like pseudopodia are seen most often at the anterior part. 1-2 contractile vacuoles lie in the middle of the cell ( Fig. 3a, 3d ). The cells move by slow gliding, but sometimes move quite rapidly. Previously reported cell length. 6-13 μm ( Bass et al. , 2009 ). Habitat. Freshwater sediments, soils. World distribution. UK , Sweden , Panama ( Bass et al. , 2009 ), Korea . Deposition. National Institute of Biological Resources, Korea (NIBRPR0000109228). Identifiers. Won Je Lee.