Urozona buetschlii Schewiakoff, 1889

Kim, Ji Hye & Jung, Ji Hye Moon and Jae-Ho, 2018, New records of 24 ciliate species (Protozoa, Ciliophora) collected in South Korea, Journal of Species Research 7 (4), pp. 291-314 : 306

19. Urozona buetschlii Schewiakoff, 1889 ( Fig. 19 )

Material examined. Freshwater collected from Gyeongpocheon River , Unjeong-dong , Gangneung-si, Gangwon-do, Korea (37°47 ʹ 20 ʺ N, 128°54 ʹ 34 ʺ E) on April 12, 2018 .

Diagnosis. Body size 12-15 × 9-12 μm after protargol impregnation; dumb-bell shape in vivo; single oval macronucleus; merged peniculi 2 + 3; undulating membrane present but inconspicuous; equatorially arranged girdle-like 23-25 somatic kineties; obliquely extended somatic kineties on right of oral field; longitudinally arranged somatic kineties on dorsal side; shortest somatic kineties on left of oral field.

Distribution. Austria, France, Germany, Hungary, Italia, Korea.

Remarks. The extended first somatic kinety on the right side was easily mistaken to be undulating membrane ( Foissner et al., 1994; Olmo et al., 1998). Urozona is a monotypic genus and recognized by a dumb-bell shaped body and equatorially restricted somatic kineties ( Foissner et al., 1994).

Voucher slide. One slide of protargol-impregnated specimens was deposited at National Institute of Biological Resources, Korea (NIBRPR0000109423).

Figures

Fig. 19. Urozona buetschlii after protargol impregnation.A. Oral and somatic ciliature on ventral side. B. Equatorially restricted somatic ciliature on dorsal view and spherical macronucleus. Scale bars=10 μm.