Ctenophora hunanensis sp. nov., SEM A dissembled frustule, note the distinctive central area, open, unornamented valvocopula, on its advalvar edge, valvocopula bears a row of serrated projections, each corresponding internally to a virga (three white arrows). Copulae with row of poroids situated at pars media (two white wavy arrows). Scale bar: 10 μm.

 
 
  Part of: Xiang D-Q, Yang R, Rioual P, Zheng Y, Liu B (2024) Ctenophora hunanensis sp. nov. (Bacillariophyta) from the Yongle River in Hunan Province, China. PhytoKeys 250: 181-191. https://doi.org/10.3897/phytokeys.250.140576