Lamtostyla islandica Berger & Foissner, 1988

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 : 254-255

4. Lamtostyla islandica Berger & Foissner, 1988 ( Fig. 4 )

Material examined. Terrestrial soil collected from Mt. Jeombongsan , Jindong-ri , Girin-myeon , Inje-gun, Gangwon-do, Korea (N 38°02 ʹ 10.3 ʺ, E 128°26 ʹ 11.3 ʺ) on 8 July 2018 .

Diagnosis. Size in vivo about 50 - 80 × 15 - 20 μm (n = 3). Body elongate elliptical with parallel margins. Two macronuclear nodules and two micronuclei each attached to a macronucleus nodule. Cortical granules lacking. Cytoplasm colorless. Adoral zone of membranelles about 20% of body length. Ventral cirri reduced in number, consists of three frontal cirri, a single buccal cirrus, three cirri left to the anterior part of the short amphisiellid median cirral row, and only three transverse cirri near cell end. Three dorsal kineties. Caudal cirri lacking.

Distribution. Australia, Austria, Brazil, Iceland, Namibia, and Korea.

Remarks. The Korean population of L. islandica fits the description of its type population ( Berger and Foissner, 1988). It is also similar to L. perisincirra in the body size and the ventral ciliature ( Berger and Foissner, 1987). However, the two species differ mainly in the number (two vs. one) and location (each attach to a macronuclear nodule vs. between macronuclear nodules) of micronuclear nodules and the number of transverse cirri (three vs. three or four).

Voucher slides. Two slides with protargol-impregnated specimens were deposited at the Nakdonggang National Institute of Biological Resources (NNIBRPR11676, NNIBRPR11677).

Figures

Fig. 4. Lamtostyla islandica from life (A) and after protargol impregnation (B, C). A. Body shape in vivo. B. Somatic and oral ciliature of ventral side. C. Dorsal kineties and right marginal cirri. 1-3, dorsal kineties; ACR, amphisiellid median cirral row; AZM, adoral zone of membranelles; BC, buccal cirrus; LMR, left marginal row; MA, macronuclear nodules; RMR, right marginal row; TC, transverse cirri. Scale bars=20μm.