Anteholosticha brachysticha Berger, 2003

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

6. Anteholosticha brachysticha Berger, 2003 ( Fig. 6 )

Material examined. Terrestrial moss collected from Mt. Yeonhwasan , Sinbun-ri , Yeonghyeon-myeon, Goseong-gun, Gyeongsangnam-do, Korea (N 35°4 ʹ 8.2 ʺ, E 128°13 ʹ 47.1 ʺ) on 4 February 2019 .

Diagnosis. Size in vivo 80 - 90 × 15 - 20 (n = 3). Body elongate elliptical, margins parallel. Nuclear apparatus composed of 21 - 32 globular or ellipsoidal macronuclear nodules and two micronuclei. Cortical granules colorless, 0.4 - 1.0 μm in size, arranged in groups around dorsal bristles and posterior to bases of ventral cirri. Cytoplasm colorless. Adoral zone of membranelles about 30% of body length. Ventral cirri reduced in number, three frontal cirri, a single buccal cirrus, two frontoterminal cirri, midventral complex composed of four to seven pairs and ends at level of proximal end of adoral zone of membranelles. Two or four transverse cirri near cell end. Right and left marginal rows composed of 20 - 22 and 17 - 24 cirri, respectively. Three dorsal kineties. Caudal cirri lacking.

Distribution. Costa Rica, Namibia, and Korea.

Remarks. The Korean population of A. brachysticha fits the description of the type population by Foissner et al. (2002) except of the colorless (vs. yellowish) cortical granules. It is also similar to A. bergeri in the body size and the ventral ciliature ( Foissner, 1987). However, they differ mainly in the color of cortical granules (colorless vs. pink), the number of macronuclear nodules (30 vs. 15 on average), and the starting point of right marginal row (at level of buccal cirrus vs. at level of proximal end of adoral zone of membranelles).

Voucher slides. Two slides with protargol-impregnated specimens were deposited at the Nakdonggang National Institute of Biological Resources (NNIBRPR11666, NNIBRPR116667).

Figures

Fig. 6. Anteholosticha brachysticha from life (A, B) and after protargol impregnation (C, D). A. Cortical granulation on ventral side (arrowheads). B. Cortical granulation on dorsal side (arrowheads) and contractile vacuole. C. Somatic and oral ciliature on ventral side with distribution of macronuclear nodules.Arrow marks last midventral cirrus. D. Dorsal kineties. 1-3 dorsal kineties; BC, buccal cirrus; CV, con- tractile vacuole; FC, frontal cirri; FT, frontoterminal cirri; LMR, left marginal row; MA, macronucleus nodule; RMR, right marginal row; TC, transverse cirri. Scale bars=30μm (A, B); 20μm (C).