Seminavis latior (A. Schmidt) Danieledis & D.G. Mann

Park, Joon Sang, Lobban, Christopher S. & Lee, Kyun-Woo, 2018, Diatoms associated with seaweeds from Moen Island in Chuuk Lagoon, Micronesia, Phytotaxa 351 (2), pp. 101-140 : 120

70. Seminavis latior (A. Schmidt) Danieledis & D.G. Mann Fig. 82

References: Danielidis & Mann (2003), p. 34, figs 35–41; Wachnicka & Gaiser (2007), p. 440, figs 226, 227.

Samples: Moen1_ Halimeda ; Moen5_ Padina

Dimensions: 37.2–47.1 μm long, 8.0–9.1 μm wide; dorsal striae 19–21 in 10 μm, ventral striae 17–21 in 10 μm.

Comments: According to Wachnicka & Gaiser (2007), S. latior differs from S. robusta in having slightly denser striae, the dorsal striae crossed by a fine longitudinal line, and a tendency toward a semi-rhombic shape, whereas there is no line in S. robusta , which tends toward elliptic lanceolate. However, we have found it difficult to ascertain these differences in our material, particularly the fine longitudinal line.

Figures

FIGURES 80–101. Sixteen naviculoid diatom species. Fig. 80. Seminavis cf. bacilica. Fig. 81. S. delicatula. Fig. 82. S. latior. Fig. 83. S. robusta. Fig. 84. Seminavis sp.1. Fig. 85. Seminavis sp.2. Fig. 86. Navicula consors. Figs 87 and 88. Navicula sp. 1. Fig 89. Navicula sp. 2. Figs 90 and 91. Navicula sp. 3 Figs 92 and 93. Navicula sp. 4. Figs 94–97. Navicula longa var. irregularis. Fig. 98. Navicula sp. 6. Fig. 99. Navicula sp. 7. Fig. 100. Navicula sp. 8. Fig. 101. Navicula sp. 9. Scale bar = 10 μm.