Parastrombidinopsis costalis, Song & Li & Huang & Al-Rasheid & Liu & Hu & Miao, 2018

Song, Wen, Li, Jiamei, Huang, Yaoyao, Al-Rasheid, Khaled A. S., Liu, Weiwei, Hu, Xiaozhong & Miao, Miao, 2018, Morphology of Three Aloricate Choreotrich ciliates, Including Description of a New Species Parastrombidinopsis costalis sp. n. (Ciliophora, Choreotrichia), and phylogeny of the genus Parastrombidinopsis, Acta Protozoologica 57 (3), pp. 153-167 : 155

Parastrombidinopsis costalis sp. n. ( Fig. 2, 3 , Table 2)

LSID urn:lsid:zoobankorg:act:AFC712DF-9861-45DA-9387-57F93BCCC73E

The diagnosis and description are based on two populations, one collected from Zhuhai and one collected from Sanya. The Zhuhai population is the type population for this new species.

Diagnosis: Cell size 30–70 × 15–40 μm in vivo, 25–73 × 13–42 μm after protargol staining. Body asymmetrically cylindrical with an obvious longitudinal ridge on dorsal side. One buccal membranelle and 16–21 collar membranelles, with proximal end located below the distal end. Six to eight somatic kineties with three to five kineties extending ventrally and three kineties extending dorsally, each composed of 8–33 dikinetids. Two ellipsoidal macronuclear nodules. Brackish and marine habitat.

Figures

Fig. 3. Photomicrographs of Parastrombidinopsis costalis sp. n. from life (A–F, J) and after protargol staining (G–I, K–N), (A–E, G–J, L, M) from Zhuhai population, and (F, K, N) from Sanya population. (A–C) Ventral-left, ventral, left-lateral views of one individual, arrows mark the dorsal ridge. (D, E) Ventral-left, ventral-right views of one individual; arrows mark the dorsal ridge. (F) Ventral-right view of one individual, arrow marks the dorsal ridge. (G, H) Ventral and dorsal views of one specimen, showing the somatic ciliature. (I) Ventral view of oral ciliature; arrow marks buccal membranelle. (J) Bases of oral membranelles; arrow marks buccal membranelle. (L) An early divider; arrow marks the oral primordium. (M) Two macronuclei. (K, N) Ventral and dorsal views of one specimen, showing the somatic ciliature. CM, collar membranelles; Ma, macronucleus; SK, somatic kinety. Scale bars: 25 μm (A, D); 20 μm (F); 3 μm (J).