FIGURES 1–8 in Cocconeis tsara sp. nov., C. santandrea sp. nov. and allied taxa pertaining to the new section Loculatae

FIGURES 1–8. Cocconeis tsara sp. nov. LM (Anakao, West coast of Madagascar). SV with round-elliptical areolae, multiseriate on the margin, RV with dense striation and well-marked hyaline rim close to the margin (1). RVs with distinct areolae and discreet central area (2–3). SVs with round to square areolae in more or less regular axial rows (4–6). SVVC closed with digitate fimbriae not always regularly disposed (7). RVVC open with short and peged fimbriae irregularly arranged (8). Scale bars = 10 µm (phase-contrast: 1, 7–8; Nomarski interference contrast: 2–6).