Climacosphenia elegantissima sp. nov., cont. GU52U-2 (A), GU52X-1 (B, C), GU44AI-5 culture (D), GU52AI-1 (E) A whole mount of frustule apical pole in girdle view, showing two girdle bands, patch of irregular areolae on the valve mantle (arrow), spines (arrowheads) B part of valvocopula broken away and showing a solid circular cross-section of the craticular bar (arrowhead) and well-developed fimbriae (arrow) C portion of valvocopula from stem, showing double craticular bars, ingrowths from opposite sides D apical pole with valvocopula showing porous bands of silica around several craticular bars E detail of copula showing stria density and fimbriate margin on pars interior. Scale bars: 10 µm (A, D, E); 5 µm (B, C).

 
 
  Part of: Lobban CS, Ashworth MP, Camacho T, Lam DW, Theriot EC (2022) Revision of Ardissoneaceae (Bacillariophyta, Mediophyceae) from Micronesian populations, with descriptions of two new genera, Ardissoneopsis and Grunowago, and new species in Ardissonea, Synedrosphenia and Climacosphenia. PhytoKeys 208: 103-184. https://doi.org/10.3897/phytokeys.208.89913