Ferocia setosa (Greville) Van de Vijver & Houk, 2017

Vijver, Bart Van De, Chattová, Barbora, Lebouvier, Marc & Houk, Václav, 2017, Ferocia gen. nov., a new centric diatom genus (Bacillariophyceae) from the sub-Antarctic region, Phytotaxa 332 (1), pp. 22-30 : 23

Ferocia setosa (Greville) Van de Vijver & Houk comb. nov. ( Figs 1–27 )

Basionym:— Melosira setosa Greville (1866) Transactions of the Botanical Society of Edinburgh 8, p. 436; pl. 6, fig. 17–19.

Lectotype (designated here): —slide BM 3532 (Aneitum, New Hebrides, in Coll. Greville, Natural History Museum, London, UK).

Figures

FIGURES 1–5. Melosira setosa Greville. LM. Type population (Aneitum, New Hebrides, lectotype slide BM 3532, Natural History Museum, London, UK). Scale bar represents 5 μm.

FIGURES 6–22. Ferocia setosa (Greville) Van de Vijver & Houk comb. nov. LM. Ile Amsterdam population (sample AMS-W033). Figs 6–7. Chains of up to 4 frustules linked by linking spines. Fig. 1 shows numerous chloroplasts. Figs 8–14. Valves linked via linking spines. Note the internal cells in Figs 8, 13 & 19 and the numerous copulae in Fig. 11 (see arrows). Fig. 15. Valve view showing the cell contours. Figs 16–22. Several valves in valve view showing linking spines. Scale bar represents 10 μm.

FIGURES 23–27. Ferocia setosa (Greville) Van de Vijver & Houk comb. nov. SEM. Ile Amsterdam population (sample AMS-W033). Fig. 23. Two valves connected by linking spines with the cingulum composed of numerous narrow, ligulate open copulae. Fig. 24. Two valves connected by linking spines. Note the large spines, the numerous granules and the areolae on the mantle. Müller step clearly visible. Fig. 25. View of an entire valve showing spines, valve face areolae and mantle.Fig. 26. Internal view of an entire valve showing the ring of rimoportulae (arrows). Fig. 27. Internal detail of the rimoportulae. Scale bar represents 10 μm except for fig. 27 where scale bar = 1 μm.