Cothurnia ceramicola, KAHL, 1933

Lu, Borong, Li, Lifang, Hu, Xiaozhong, Ji, Daode, Al-Rasheid, Khaled A S & Song, Weibo, 2019, Novel contributions to the peritrich family Vaginicolidae (Protista: Ciliophora), with morphological and phylogenetic analyses of poorly known species of Pyxicola, Cothurnia and Vaginicola, Zoological Journal of the Linnean Society 187 (1), pp. 1-30 : 10

COTHURNIA CERAMICOLA KAHL, 1933

( FIGS 4A–L , 5A–R; TABLES 1, 4, 5)

Cothurnia ceramicola was originally reported by Kahl in 1933 as an epibiont of the alga Ceramium from Kiel, Germany, and redescribed several times thereafter. However, its ciliature data is still unavailable. An improved diagnosis based on previous reports and new data is hereby supplied.

Figures

Figure 4. Cothurnia ceramicola in vivo (A–J) and after protargol staining (K, L). A, lateral view of an individual with single zooid. B, showing macronucleus in vivo. C, lateral view of an individual with two zooids. D–G, varieties of lorica shape. H, striations of pellicle. I, apical view of zooid, showing the location of contractile vacuole. J, posterior portion of individual, showing lorica base, endostyle, mesostyle, stalk and basal disc. K, showing macronucleus and the trochal band. L, oral ciliature. Abbreviations: AR, annular ridge; BD, basal disc; CV, contractile vacuole; En, endostyle; EM1–2, epistomial membrane 1–2; G, germinal kinety; H, haplokinety; In, infundibular; Ma, macronucleus; Me, mesostyle; Po, polykinety; P1–3, infundibular polykineties 1–3; St, stalk; TB, trochal band; Tu, tube. Scale bars = 50 μm.

Figure 5. Photomicrographs of Cothurnia ceramicola in vivo (A–L) and after protargol staining (M–R). A–F, lateral views of different individuals with single zooid (A, C, E, F) and two zooids (B, D); arrow indicates the contractile vacuole. G, the single-layered peristomial lip. H, arrow indicates the contractile vacuole. I, apical view of zooid; arrow indicates the contractile vacuole, arrowhead indicates the infundibulum. J, lateral view of lorica; arrows indicate the annular ridges on the lorica, arrowheads indicate the everted aperture. K, apical view of aperture. L, posterior portion of individual; arrow indicates the mesostyle, arrowhead indicates the lorica base, double-arrowheads indicate the basal disc. M, N, oral ciliature. O, P, two stained specimens. Q, R, oral ciliature; arrow indicates the epistomial membrane 2. Abbreviations: EM1–2, epistomial membrane 1–2; G, germinal kinety; H, haplokinety; P1–3, infundibular polykineties 1–3. Scale bars = 50 μm.