Pontoniinae (Crustacea: Decapoda: Caridea) from Brazil with taxonomic key Author Vieira, Rony R. R. Author Ferreira, Rodrigo S. Author D’Incao, Fernando text Zootaxa 2012 3149 1 38 journal article 45720 10.5281/zenodo.279517 9a013bae-8524-49ab-9627-88269911cc22 1175-5326 279517 Periclimenes paivai Chace, 1969 Periclimenes paivai — Chace, 1969 :259 ; Ramos-Porto & Coelho, 1998 :339 . FIGURE 15. Distribution of Periclimenes paivai Chace, 1969 . Diagnosis. Rostrum directed slightly upward, dorsal margin with 8 to 10 teeth, ventral margin armed with 2, rarely 1, teeth. Antennular peduncle with stylocerite sharp and slender, reaching about to midlength of basal segment. Scaphocerite overreaching antennular peduncle, nearly three times as long as wide. Carapace with hepatic spine and without postorbital ridge. Mandible without palp. First pereopods overreaching antennal scale by two-thirds of finger; fingers unarmed, about two-thirds as long as palm; carpus slightly shorter than chela and distinctly shorter than merus. Second pereopods similar but slightly unequal. Major pereopod overreaching antennal scale by slightly more than chela and carpus, fingers robust and short, less than one-third as long as palm in large specimens, each armed with 2 teeth on opposable margins, proximal tooth on dactyl partially divided. Minor pereopod slightly shorter, overreaching antennal scale by chela and most of carpus. Third to fifth pereopods with simple dactyli. Telson with 2 pairs of dorsal spines and 3 pairs of spines on posterior margin. Distribution. Western Atlantic: Brazil (São Paulo and Santa Catarina) (Figura 15) ( Chace, 1969 ; Ramos-Porto & Coleho, 1998 ; Martinelli-Filho et al ., 2008). Material examined. None. Ecological notes. The species is found associated with scyphomedusae Lychnorhiza lucerne , Chrysaora lacteal and Phyllorhiza punctate ( Chace, 1969 ; Martinelli-Filho et al ., 2008).