Sterkiella paratricirrata, Wang & Lyu & Shao, 2021

Wang, Jingyi, Lyu, Zhao & Shao, Chen, 2021, Morphology, morphogenesis and molecular phylogeny of the new soil ciliate Sterkiella paratricirrata n. sp. (Ciliophora, Hypotrichia, Oxytrichidae), Journal of Natural History 54 (37 - 38), pp. 2471-2488 : 2473-2474

Sterkiella paratricirrata n. sp.

http://www.zoobank.org/urn:lsid:zoobank.org:act:5F639576-8189-4577-A66C-

0DDFD45D516E

Diagnosis

Body elliptical, measuring 70–100 × 35–50 µm in vivo. Two macronuclear nodules and one to four micronuclei. Contractile vacuole located approximately at mid-body. Adoral zone composed of 22–28 membranelles. Constantly 16 frontoventral-transverse cirri with three transverse cirri closely positioned and four frontoventral cirri arranged in triangle. One left and one right marginal row comprising 15–21 and 19–24 cirri, respectively. Four dorsal kineties and two dorsomarginal kineties. Three caudal cirri. Resting cyst with polygon wrinkles on the surface. Soil habitat.

Type locality

Collected from the surface soil (c. 0–10 cm) on a hill in Jiangjunshan ancient town (34º01 ʹ 19 ʹ ’N; 108º65 ʹ 51 ʹ ’E), Xi’an, China.

Deposition of slides

The protargol slide (No. LZ2016041702A) containing the holotype specimen ( Figures 1 (c,d) and 2(k,l); Table 1) and other three paratype slides (No. LZ 14111601 B–D) have been deposited in the Laboratory of Protozoology, Xi’an Jiaotong University, China. The holotype specimen was marked on the back of the slides, following Aescht (2008) and Foissner (2014) for the labelling of the slides.

Etymology

The species-group name ‘ paratricirrata ’ is a composite of the Greek adjective ‘para-’ (beside or like) and the species-group name ‘ tricirrata ’, meaning a ciliate similar to Sterkiella tricirrata .

Figures

Figure 1. Morphology of Sterkiella paratricirrata n. sp. from life (a, b) and after protargol staining (c, d). (a) Ventral view of a representative individual. (b) Resting cyst. (c, d) Ventral (c) and dorsal (d) view of the holotype specimen, showing the infraciliature and nuclear apparatus. AZM, adoral zone of membranelles; CC, caudal cirri; CV, contractile vacuole; LMR, left marginal row; Ma, macronuclear nodules; Mi, micronuclei; RMR, right marginal row; I/1, II/3, III/3, frontal cirri; II/2, buccal cirrus; III/2, IV/ 3, VI/3, VI/4, frontoventral cirri; IV/2, V/4, V/3, postoral ventral cirri; V/2, VI/2, pretransverse ventral cirri; IV/1, V/1, VI/1, transverse cirri; 1–6, dorsal kineties 1–6. Scale bars = 10 µm (b) and 50 µm (a, c, d).