Figure 4 in Morphology, morphogenesis and molecular phylogeny of the new soil ciliate Sterkiella paratricirrata n. sp. (Ciliophora, Hypotrichia, Oxytrichidae)

Figure 4. Middle and late stages of morphogenesis of Sterkiella paratricirrata n. sp. after protargol staining. (a–d) Ventral (a, c) and dorsal (b, d) views of two middle dividers, showing frontoventraltransverse anlagen differentiate into cirri and the leftmost frontal cirrus is separated from the undulating membranes anlage. Arrowheads in (a) mark the anlagen for dorsomarginal kineties. Arrowheads in (d) show the third dorsal kinety anlage splits to form dorsal kineties 3 and 4. Note the macronuclear nodules fusing into a single mass. (e–h) Ventral (e, g) and dorsal (f, h) views of two late dividers to show 16 frontoventral-transverse cirri migrating towards their final positions. Dotted lines connect cirri that develop from the same cirral streak. Note caudal cirri formed, and macronuclear nodules divide. LMA, left marginal anlagen; LMR, left marginal row; RMA, right marginal anlagen; RMR, right marginal row. Scale bars = 50 µm.