FIGURES 91–102 in New species of benthic marine diatoms (Bacillariophyta) from the Western Pacific islands of Guam and Yap

FIGURES 91–102. Pleurosigma simulacrum. DIC (Figs 91–93), SEM (Figs 94–102). Figs 91, 92. Holotype specimen, entire and portion at higher magnification, GU44AR-1. Fig. 93. Living cell, GU44AD-1. Figs 94–97. Specimens from culture GU52X-1 (courtesy M. Ashworth). Fig. 94. Central area, external view showing nonoverlapping central raphe endings. Fig. 95. Apex, showing hooked terminal raphe ending. Fig. 96. Internal central area; arrows indicate lines of small areolae along the sternum and valve border. Fig. 97. Internal apex, in this case with no areolae around the apex (arrowhead). Figs 98–101. Specimens from wild material. Figs 98, 99. External central and apical portions, the latter showing absence of calcar along valve border; Y26B, Yap, same arrows as on culture specimens. Figs 100, 101. Internal central and apical portions, GU44AR-1, same arrows as on culture specimens, apex showing one duplex areola on each side of the apex. Fig. 102. Specimen from Y37-8, showing apex with single duplex areola at apex. Scale bars: 91–93 = 10 µm, Figs 98, 99 = 5 µm, Figs 94–97, 100–102 = 2 µm.