Table 3 in Morphological Redescription and SSU rDNA-based Phylogeny of Two Freshwater Ciliates, Uronema nigricans and Lembadion lucens (Ciliophora, Oligohymenophorea), with Discussion on the Taxonomic Status of Uronemita sinensis

Table 3. Comparison of the Zhanjiang population of Lembadion lucens with other populations.CharactersaLembadion lucensLembadion lucensLembadion lucensLembadion lucensThurophora lucensData sourceOriginalFoissner et al. 1994Guinea et al. 1990Dragesco and Dragesco-Kernéis 1986Maskell 1887Body size in vivo45–70 × 20–40 μm50–70 × 30–50 μm, rarely up to 100 μm in length59.4–75.9 × 26.4–42.9 μm60–75 μm in length62.5 × 43.7 μmBody shapeoval to long ellipsoidal in outline, ratio of length:width approximate- ly 3:2 to 2:1ovoid shape, ventrally flat and hol- lowed deep by the huge oral appa- ratus, dorsally strongly convexoval-shapedmore roundedellipticalBuccal fieldabout 30–45 × 20–35 μm in size, occupying three-fourths to four- fifths of the body lengthhuge, takes up almost the entire ventral surface46.2–59.4 × 16.5–23.1 μm30–40 μm in length3/4 of the body lengthNumber of somatic kineties25–3025–3530–35, the majority located on dorsal side25–30, 10–14 ventrally and 15–16 dorsallyN/ADikinetids in kinety rows4–5 dikinetids on dorsal side; 8–12 dikinetids ventrallyall are dikinetids (depicted from the drawings)seem to be composed of dikinetidsall are dikinetids (depicted from drawings)N/ANumber of AM rows7N/A7N/AN/AFeatures of caudal ciliatwo rows, one row with five or six basal bodies and another row with two or three basal bodiesabout 10 basal bodiestwo rows, with six and four basal bodies respectivelyN/AN/ALength of caudal cilia20 μm30 μmN/Aup to 30 μmN/ANuclear apparatussingle kidney- or L-shaped macro- nucleus positioned mid to posterior portion; one spherical micronu- cleus, about 2.5 μm in diametermacronucleus ellipsoid or reni- form near the rear end usually left the medians; one spherical micronucleusan elongated macronucleus and one spherical micronucleusone kidney macronucleus, along 20 μm, accompanied by a micronucleus 3 μm in diametermacronucleus elongate, ir- regular, subcentral, rather nearer to the posterior endFeatures of contrac- tile vacuoleabout 7 µm in diameter when fully expanded, centrally positioned near the right margin of the cell on the dorsal sidein the posterior medians, dumped over a very long channel at the rear end of the ventral sideN/Aleft posterior position, accompa- nied by a satellite vacuoles and excretory duct 12 microns long, opening inside the peristome.single, central, behind the oral membraneaAM, adoral membranelle; N/A, non applicable.