Figures 44–49 in Marine benthic diatoms of Guam: new records, Dictyoneis apapae sp. nov., and updates to the checklist

Figures 44–49. Dictyoneis apapae, sp. nov. Figs 44, 45 LM, all others SEM. Fig. 44. Holotype (stack of two focal planes), slightly oblique, showing apparent striae and apparent chambers on near side. Fig. 45. Valve straight on, central nodule focal plane. Fig. 46. Valve in SEM showing external side of pseudoloculi; note opposite deflection of terminal raphe endings (arrows); enlarged in next two figures. Fig. 47. Detail of apex showing large groove in mantle and two rows of pores in the valvocopula (VC). Fig. 48. Detail of central area showing double layer of external pseudoloculi; also showing external raphe slits bordered by thin ridges of silica (arrow), and absence of circular area of small pseudoloculi. Fig. 49. Detail of marginal pseudoloculi. Scale bars: Figs 44–46 = 10 µm, Figs 47–49 = 5 µm.