Pseudobirojimia muscorum (Kahl, 1932) Foissner,, 2016

Kim, Ji Hye & Jung, Atef Omar and Jae-Ho, 2020, Brief description of 18 newly recorded ciliate species from soil and inland waters (Protozoa, Ciliophora) in South Korea, Journal of Species Research 9 (3), pp. 251-268 : 256-258

7. Pseudobirojimia muscorum (Kahl, 1932) Foissner,

2016 ( Fig. 7 )

Material examined. Terrestrial moss collected from Mt. Odaesan , Odaesan-ro , Jinbu-myeon , Pyeongchang-gun, Gangwon-do, Korea (N 37°43 ʹ 53.2 ʺ, E 128°35 ʹ 23.4 ʺ) on 28 April 2018 .

Diagnosis. Size 140 - 160 × 20 - 25 μm after protargol impregnation (n = 3). Body slender and elongate ellipsoid with posterior end narrower than anterior. 51 - 56 macronuclear nodules. Contractile vacuole slightly left and anterior to body center. Cortical granules colorless, ellipsoid, arranged in short rows around dorsal bristles. Cytoplasm colorless. Adoral zone of membranelles about 25% of body length. Three frontal cirri, one buccal cirrus, midventral complex consists of six or seven midventral pairs and 13 - 16 midventral cirri. Two frontoterminal cirri. Usually four transverse cirri near cell end. Inner right marginal row consists of 33 - 47 cirri, outer row of 33 - 37 cirri, and left marginal row consists of 41 - 45 cirri.

Distribution. Amazonia, Australia, Austria, Chile, Germany, Kenya, Marion Islands, Namibia, and Korea.

Remarks. The Korean population of Pseudobirojimia muscorum fits the description by Foissner (1982) in almost all characters. According to Foissner (2016), Pseudobirojimia muscorum differs from other Holostichidae by the presence (vs. absence) of the midventral cirral row. It also differs from the family Bakuellidae by having one left and two right marginal cirral rows and continuous adoral zone of membranelles.

Voucher slides. One slide with protargol-impregnated specimens were deposited at the Nakdonggang National Institute of Biological Resources (NNIBRPR11685).

Figures

Fig. 7. Pseudobirojimia muscorum from life (A, B) and after protargol impregnation (C, D). A. Slender body shape in vivo. B. Cortical granulation on dorsal side. C, D. Ventral ciliatures. BC, buccal cirrus; CV, contractile vacuole; FC, frontal cirri; LMR, left marginal row; MA, macronucleus nodule; RMR1, 2, inner and outer right marginal rows; TC, transverse cirri. Scale bars=50μm.