Parabirojimia similis Hu et al., 2002

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 : 323-324

1. Parabirojimia similis Hu et al., 2002 ( Fig. 1 )

324 JOURNAL OF SPECIES RESEARCH Vol. 7, No. 4

Material examined. Seawater (32‰) from Oho breakwater, Gangwon Province, Korea (38°19ʹ33ʺN, 128°31ʹ 47ʺE), on June 2018 .

Diagnosis. Cell size 130-155 × 40-55 μm in protargol preparations, body outline roughly elongated elliptical, widest in anterior body third, left and right margin converging posteriorly, and flexible; adoral zone 25% of body length, 37-54 adoral membranelles, bipartite; 4 or 5 macronuclear nodules with about 3 micronuclei; 3 frontal and 2 frontoterminal cirri; 1 buccal cirrus; 5-7 cirri in midventral pairs with 37-48 additional midventral cirri; 5-8 transverse cirri; 1 left and 5 or 6 right marginal cirral rows; 3 dorsal kineties; caudal cirri lacking.

Remarks. Two described Parabirojimia species, P. multinucleata and P. similis , are different by the following combination of features: numbers of macronuclear nodules (43-70 vs. 3-6), right marginal cirral rows (invariably 5 vs. 5-8), ventral cirri (44-69 vs. 27-45), and adoral membranelles (52.4 vs. 46.7 on average) ( Chen et al., 2010). The Korean population of P. similis corresponds very well with the Chinese population ( Berger, 2006).

Deposition. Four slides (NIBRPR0000109455-NIBRP R0000109458) have been deposited at the National Institute of Biological Resources (NIBR), Korea.

Figures

Fig. 1. Photomicrographs of Parabirojimia similis from life (A) and after protargol impregnation (B-E). (A-D) Ventral views. (E) Dorsal view. Scale bars=100 μm.