Fig. 6 in Integrative taxonomy of five astome ciliates (Ciliophora, Astomatia) isolated from earthworms in Central Europe

Fig. 6. Metaradiophrya varians (de Puytorac, 1954), Slovak specimens in vivo. A. Semi-schematic diagram of the ventral side, showing the localization of fibrillar hook, the arrangement of contractile vacuoles and the somatic ciliary pattern. Arrowheads mark the subapical suture extending from the right body margin over the fibrillar hook towards the left body margin. B. Detail of the anterior body portion, showing the fibrillar hook and its associated fibers. There are 5 or 6 fibers attached to the upper right side of the longer arm, on average 26 (22–29) fibers to the ventral side of the longer arm and 11 or 12 fibers to the left side of the shorter arm. C. Shape variants of fibrillar hooks. The longer arm of the hook measures on average 30 µm, while the shorter arm only 11 µm. D–E. The macronucleus is rodlike and accompanied by an elliptical micronucleus. F–I. Variability of body shape and size as well as of the contractile vacuole and nuclear apparatus. There are two staggered rows of contractile vacuoles arranged along the left and right side of the macronucleus. Drawn to scale. J. Ventral view, showing a late divider. Scale bars: A, F–J = 50 µm; B = 20 µm.