Comprehensive Description

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Description

Body pentagonal, flattened dorso-ventrally. Five long (~37.70 mm) and narrow (~9.56 mm) arms (length of arm corresponds to approximately four times its width) (Fig. 5e). Madreporite oval (~1.52 mm) and marginal. Epiproctal cone pronounced. Paxillae small and granulose, with 1–4 central spinelets and 9–12 marginal spinelets. Paxillar spinelets granulose (Fig. 5e). Superomarginal figs granulose (Fig. 5g). Two fringes of marginal spines aligned horizontally. First row of spines of inferomarginal figs with three marginal spines, disposed in parallel to each other, two being of the same length and one shorter. Second row with four elongate and slightly flattened spines, three of which are subequal in length and one much shorter. Oral spines short, forming a bundle at the apex of the jaw (Fig. 5f). Adambulacral figs with 3–4 divergent spines, the median one being the largest (Fig. 5h). Subambulacral spines forming a bundle of elongate and slightly flattened (lanceolate) spines. Pedicellariae rarely present.

Colour. According to Benavides-Serrato et al. (2011) and Bernasconi (1957), the species has the abactinal surface red or orange-red and the actinal surface white. Ventura et al. (2007) recorded a cream-colour on the dorsal surface and white on the oral surface in Brazilian specimens.

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Creative Commons Attribution 3.0 (CC BY 3.0)

© Anne Isabelley Gondim, Martin Lindsey Christoffersen, Thelma Lúcia Pereira Dias

Source: ZooKeys

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