Brachycarpus biunguiculatus ( Lucas, 1846 )

Almeida, Alexandre O., Boehs, Guisla, Araújo-Silva, Catarina L. & Bezerra, Luis Ernesto A., 2012, Shallow-water caridean shrimps from southern Bahia, Brazil, including the first record of Synalpheus ul (Ríos & Duffy, 2007) (Alpheidae) in the southwestern Atlantic Ocean, Zootaxa 3347, pp. 1-35 : 5

Brachycarpus biunguiculatus ( Lucas, 1846)

Palaemon biunguiculatus Lucas, 1846: 45 , pl. 4, figs. 4–4a.

Material examined. 1 m, 05.V.2008, Itacaré, Concha Beach, mouth of Contas River, MZUESC 1202.

Distribution. Western Atlantic—Brazil (Fernando de Noronha, and from Amapá to Espírito Santo). Central Atlantic—Ascension and Saint Helena. Eastern Atlantic—Madeira and Canary Islands, Liberia, and Congo. Mediterranean. Indo-Pacific and Eastern Pacific ( Williams 1984; Ramos-Porto & Coelho 1998; d’Udekem d’Acoz 1999).

Ecological notes. The single individual was collected on a sandy bottom in a tide pool together with Palaemon northropi ( Rankin, 1898) , in a salinity of 25 psu (area under influence of the Contas River mouth). Depth range: intertidal to 105 m ( Ramos-Porto & Coelho 1998).

Previous records. Salvador ( Coelho 1969a, as B. biunguiculatus ); locality not informed (Coelho & Ramos- Porto 1972, as Brachycarpus sp.; Ramos-Porto & Coelho 1990, as B. biunguiculatus ); REVIZEE Program Central Score (18º02’70”S, 37º19’74”W; 16º47’13”S, 38º41’48”W, and 13º38’98”S, 38º45’94”W) (Cardoso 2006, as B. biunguiculatus ; Ferreira et al. 2010, as B. biunguiculatus ); REVIZEE Program Central Score (St. C5-2R, C5-13R, and C5-16R) ( Serejo et al. 2006, as B. biunguiculatus ); REVIZEE Program Central Score (16º19’55”S, 38º14’39”W) ( Ferreira et al. 2010, as B. biunguiculatus ).

Remarks. In the sampling conducted during the REVIZEE Program Central Score, B. biunguiculatus was found at stations with depths ranging from 50 to 100 m (C5-2R, C5-13R, and C5-16R) and at stations C5-4F and C5-7F, to which were attributed much greater depths of 1700 to 1500 m, respectively ( Serejo et al. 2006). As the latter depths are far beyond the usual depth limit of this species, it is likely that either collection station or depth attributions in Serejo et al. (2006) were erroneous.