Phacodinium metchnicoffi Certes, 1891

Kim, Ji-Yeong & Jung, Jae-Ho, 2016, Taxonomic survey on ciliate diversity in eastern area of Kangwon-province, Korea: Brief records of fifteen species unrecorded from Korea, Journal of Species Research 5 (3), pp. 333-342 : 340

15. Phacodinium metchnicoffi Certes, 1891 ( Fig. 2G )

Diagnosis: Body size 100 × 60 μm in protargol preparations; body shape broadly elliptical to ovate, flattened dorsoventrally. Nuclear apparatus composed of curved cylindrical macronuclear nodule, which run along with adoral zone of membranelles, and several micronuclei. Cytoplasm colorless. Movement, without any peculiarities, crawling on soil surface or swimming. Buccal ciliatures composed of adoral zone of membranelles and paroral cilia which connected to proximal end of adoral zone.

Remark: In fact, our record of Phacodinium metchnicoffi is not first in Korea. Even though Shin et al. (2000) reported the nuclear SSU rDNA sequences of a Korean population without morphological description, the species was not listed in ‘National list of species of Korea (Protozoa)’ ( National Institute of Biological Resources, 2012).

Voucher slides: Two slides including protargol­impregnated specimens have been deposited in the National Institute of Biological Resources in Korea (NIBRPR0000 107124, NIBRPR0000107125).

Figures

Fig. 2. Protargol­stained specimens, ventral views. A. Frontonia depressa, 65 μm in length; B. Anteholosticha distyla, 125 μm in length; C. Periholosticha paucicirrata, 70 μm in length; D. Saudithrix terricola, 220 μm in length; E. Oxytrichella mahadjacola, 35 μm in length; F. Notohymena antarctica, 80μm in length; G. Phacodinium metchnicoffi, 100 μm in length.