Ardissonea densistriata sp. nov. A holotype from Bikar Atoll, BA1 (LM) B, C external views of valves in SEM; arrows on B point to location of annulus (B Y42-1, C BA-1) D, E external view of two ends of same frustule showing isopolarity; arrow on E points to apical notch in VC (J5) F, G internal views of valves with one and two middle lines of foramina, arrows showing asymmetrical pseudoseptum on valve in F and asymmetrical pole of the valvocopula in G; arrowheads point to longitudinal costae (BA1) H, I external views of frustules from Bikar and Jaluit, respectively, showing profile of pole of valvocopula in H and apical comb of fimbriae on copula in I (arrow). Scale bars: 10 µm (A–C); 5 µm (D, E); 2.5 µm (F–I).

 
 
  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