Obertrumia gracilis Foissner, 1989

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 : 337

7. Obertrumia gracilis Foissner, 1989 ( Fig. 1G )

Diagnosis: Body size 65 × 35 μm in protargol preparations; body ellipsoidal, anterior and posterior body ends rounded; rigid. Macronuclear nodule spherical to elliptical, positioned at mid­body with spherical to elliptical micronucleus. Contractile vacuole at mid­body, one excretory pore. Cytoplasm colorless. Usually 60 somatic kineties and bipartite nassulid organelles.

Remark: The genus Obertrumia can be distinguished from Nassula mainly by the feature of nassulid organelles (bipartite in Obertrumia ; Foissner et al., 2002). Obertrumia gracilis has similar morphology to the congener O. kahli while the latter species differs from the former by the proportion of the number of bipartite nassulid organelles ( Foissner, 1989).

Voucher slides: Two slides including protargol­impregnated specimens have been deposited in the National Institute of Biological Resources in Korea (NIBRPR0000 107134, NIBRPR0000107135).

Figures

Fig. 1. Protargol­stained specimens. A. Grossglockneria acuta, right side view, 35 μm in length; B. Nivaliella plana, right side view, 12 μm in length; C. Blepharisma hyalinum, right side view, 65 μm in length; D. Cultellothrix coemeterii, left side view, 55 μm in length; E. Drepanomonas hymenofera hymenofera, right side view, 30 μm in length; F. Leptopharynx costatus costatus, right side view, 25 μm in length; G. Obertrumia gracilis, ventral view, 65μm in length; H. Furgasonia rubens, ventral view, 45μm in length.