Surirellacaea Kützing

Al-Handal, Adil Y., Compère, Pierre & Criobe-Usr, Catherine Riaux-Gobin, 2016, Marine benthic diatoms in the coral reefs of Reunion and Rodrigues Islands, West Indian Ocean, Micronesica 2016 (3), pp. 1-78 : 37

Family Surirellacaea Kützing

Campylodiscus incertus A. Schmidt (Pl. 11, Fig. 8) References: Desikachary, 1988, pl. 485, fig. 1; Navarro 1983b, p. 396, fig. 59.

Features: Diameter 35-58 µm, central area on external valve surface is broad, divided by two radiating rows of costae, 14-15 in 10 µm.

Remarks: Under LM, this species appears similar to C. innominatus Ross et Abdin ( Ross & Abdin 1949, p. 227, fig. 4). The latter species has narrower central area and the costae are parallel. Occurrence: Rare in Reunion Island. Previously reported from Seychelles (G).

Campylodiscus latus Shadbolt (Pl. 11, Figs 5, 6) References: Desikachary 1988, pl. 482, figs 4, 5, 9-11, 13.

Features: Diameter 50-60 µm, infundibula 2 in 10 µm, extending from the raphe keel toward a broad elliptic lanceolate central area. C. latus is very similar to C. ambiguus Greville and according to Ruck & Kociolek (2004), the latter is a synonym to C. latus. However, type material has not been examined in detail and both taxa remain separate ( Lobban et al. 2012).

Occurrence: Rare in Reunion and Rodrigues Islands.