Paragonostomoides, Foissner, 2016

Min, Kang-San Kim and Gi-Sik, 2018, Brief morphological description of stichotrichid ciliates (Ciliophora: Stichotrichia) from Korea, Journal of Species Research 7 (4), pp. 323-332 : 326

4. Paragonostomoides xianicum Wang et al., 2017

( Fig. 4 )

Material examined. Soil sample from Gyeokpo-ri, Buan-gun, Jeollabuk Province, Korea (35°38ʹ22ʺN, 126° 27ʹ59ʺE), on October 2015 .

Diagnosis. Cell size 70-85 × 25-35 μm in protargol preparations; 25-28 adoral zone of membranelles; mitochondrion-like cortical granules present, colorless; 2 macronuclear nodules with about 2 micronuclei; 3 frontal cirri; 1 buccal cirrus; 3 or 4 cirri in frontoventral cirral row III; 6-8 cirri in frontoventral cirral row IV; 10 or 11 cirri in frontoventral cirral row VI; about 6 paroral; pretransverse and transverse cirri lacking; 1 left (10- 12 cirri) and 1 right (16-18 cirri) marginal cirral rows; 3 dorsal kineties; 3 caudal cirri.

Remarks. The Korean population of Paragonostomoides xianicum can be separated from P. minutus by body length (75 μm vs. 33 μm on average) in protargol preparations, the numbers of macronuclear nodules (2 vs. 7 or 8), left marginal cirri (10 vs. 4 on average), frontal, buccal and frontoventral cirri (15 vs. 7 on average), and basal bodies in paroral (5-8 vs. 2-3) ( Kamra et al., 2008; Wang et al., 2017).

Deposition. Three slides ( NNIBR2018113 IV1940 - NNIBR2018113 IV1942) have been deposited at the Nakdonggang National Institute of Biological Resources ( NNIBR), Korea .

Figures

Fig. 4. Photomicrographs of Paragonostomoides xianicum from life (A, B) and after protargol impregnation (C, D). (A-B) Ventral views. (C) Cortical granules. (D) Ventral view. Scale bars=50 μm.