Porcelain crabs from Brazil (Crustacea: Decapoda: Anomura: Porcellanidae) Author Ferreira, Luciane Augusto De Azevedo Author Melo, Gustavo Augusto Schmidt De text Zootaxa 2016 4092 2 175 194 journal article 10.11646/zootaxa.4092.2.2 210d7273-bbb8-410c-aeb7-222cbd828cfc 1175-5326 261197 00C31F86-103C-4425-B40D-78E7D52AB668 Pachycheles riisei (Stimpson, 1859) ( Fig. 2 B) Pisosoma riisei Stimpson, 1858: 228 [ nomen nudum ]; 1859: 75 (type-locality: St. Thomas, Virgin Islands ). Pachycheles riisei —Haig, 1956: 12. Material examined . Brazil : Ceará—Acaraú, R/V “Almirante Saldanha”, st. 1710, 17 m , 1 ovigerous female (MZUSP-8981). Paraíba—Tambaú, Recife Quebra-Quilha, 1 male , 1 ovigerous female (MZUSP-13842). Pernambuco—Paulista, 2 ovigerous females (DOUFPE-7485). Alagoas—Marechal Deodoro, Praia do Francês, 1 ovigerous female (MZUSP-12577). São Paulo—São Sebastião, 2 males (MZUSP-10670). Geographic distribution . Western Atlantic—USA, Florida; Belize , Carrie Bow Cay; Puerto Rico ; Virgin Islands , St. Thomas; Barbados ; Colombia , Gulf of Darien, Santa Marta , Providence and Rosario Islands; Venezuela , Margarita and Cubagua Islands; Tobago and Brazil (Rocas Attol, Fernando de Noronha and Trindade Islands, Ceará and from Paraíba to São Paulo). Recognition characters . Carapace slightly broader than long, convex and smooth; posterolateral regions plicate; epibranchial region dilated. Front broad. Outer orbital angle produced into acute teeth. Chelipeds subequal; merus with subtriangular lobe on dorsoflexor margin, 2 small distal teeth on ventroflexor margin; carpus with 3 lamelar, sinuous lobes on flexor margin, extensor margin fairly rugose, with longitudinal groove delimitating carina, distal tooth; propodus with longitudinal groove delimitating carina on extensor margin; fingers with prominent proximal tubercle, grooved on cutting face; major cheliped with hiatus. Walking legs smooth; propodus with 4 spines on flexor margin; dactylus with 4 or 5 spines on flexor margin. No gonopods in males. Telson composed of 5 plates. Habitat . Intertidal region, under rocks, on calcareous algae and coral reefs (Veloso 1998).