Lamtostyla longa ( Hemberger, 1985 ) Berger &

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 : 255-256

5. Lamtostyla longa ( Hemberger, 1985) Berger &

Foissner, 1988 ( Fig. 5 )

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 50 - 60 × 15 - 20 μm after protargol impregnation (n = 3). Body ellipsoid with both ends round- ed and margins parallel. Two macronuclear nodules and two micronuclei each attached to a macronuclear nodule. Contractile vacuole slightly left to body center. Cortical granules lacking. Cytoplasm colorless. Adoral zone of membranelles about 25% of body length. Three frontal cirri, single buccal cirrus, amphisiellid median cirral row consists of two cirri, usually three cirri left and anterior to amphisiellid median cirral row. Two frontoterminal cirri. Two pretransverse and five transverse cirri near cell end. Right and left marginal rows composed of 14 - 17 and 14 - 18 cirri, respectively, anterior portion of right marginal row on dorsal side. Three dorsal kineties. Caudal cirri lacking.

Distribution. Peru and Korea.

Remarks. The Korean population of L. longa fits the description of the type population by Hemberger (1985). However, the size of the Korean population is slightly smaller (50 - 60 × 15 - 20 vs. 103 μm after protargol impregnation, Figure 19 in Hemberger (1985)). Moreover, it is not known if the type population possesses cortical granules, which is clearly absent in the Korean population. Lamtostyla longa is similar to L. raptans in the lack of cortical granules and in having five transverse cirri, amphisiellid cirral row composed of only four cirri, and five dorsal kineties. The two species differ mainly in the body size (<100 vs. about 200 μm), the number of cirri in the right and left (14 - 17 and 14 - 18 vs. 57 - 68, and 60 - 62, respectively) marginal cirri ( Hemberger, 1985).

Voucher slides. Two slides with protargol-impregnated specimens were deposited at the Nakdonggang National

Institute of Biological Resources (NNIBRPR11678, NNI BRPR11679).

Figures

Fig. 5. Lamtostyla longa from life (A-C) and after protargol impregnation (D, E). A. Typical body shape in vivo. B, C. Dorsal and ventral views showing the lack of cortical granules absent. D, E. Somatic and oral ciliature on ventral side. ACR, amphisiellid median cirral row; AZM, adoral zone of membranelles; BC, buccal cirrus; CV, contractile vacuole; FV, food vacuole; LMR, left marginal row; MA, macronu- clear nodule; MI, micronucleus; PTC, pretransverse cirri; RMR, right marginal row; TC, transverse cirri. Scale bars=20μm.