Fig. 6

L. joymaciae n. sp., valve (a–f) and frustule (g); (a–e DIC, f, g SEM). a, b Live cells in valve view, showing plastids. c–e Holotype. c Apex with rimoportula, d basal pole, e entire valve. f Entire external view of valve in SEM. g Girdle view showing the four pleurae (1 through 4). White arrow shows midrib of 2nd pleura swung towards advalvar side and black arrow shows where abvalvar striae are lost on 4th pleura. h External view of apex with rimoportula opening (arrow), also showing portion of the 4th pleura (arrowheads). i Internal view of apex with rimoportula and uniform pattern of striae along septum. j Oblique internal apex showing shape of rimoportula. k, l External view of basal pole with rimoportula opening (arrow). m Internal view of basal pole with rimoportula. Scale bars: a, e, 50 μm. b–d, 10 μm, f, 100 μm, g–i, k–m, 5 μm, j, 2.5 μm