Ardissoneopsis appressata sp. nov., cont. GU44BJ-4 except as noted A girdle view of part of colony showing cells joined valve to valve, and the pattern of pores in valvocopula (VC) and copula (cop) (GU44AE-2) B, C valve pole in external and internal view, respectively showing tip of annulus (arrows) D portion of copula showing fimbriae E portion of valve near center: arrow points along longitudinal thickening below annulus and arrowhead indicates narrowing of transverse costae at margin F portion of frustule in narrow part, showing internal and external aspects and portions of the fimbriate valvocopulae (GU44T-1). Scale bars: 5 µm (A–C, E, F); 2 µm (D).

 
 
  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