Alpheus cf. paracrinitus Miers, 1881

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 : 12

Alpheus cf. paracrinitus Miers, 1881

( Fig. 2 D)

Alpheus paracrinitus Miers, 1881: 365 , pl. 16, fig. 6.

Material examined. 1 f, 02.VIII.2008, Cairú, Moreré Beach, Boipeba Island, MZUESC 1296.

Distribution. Western Atlantic—Bermuda, West Indies, Panama and Brazil (Paraíba and Espírito Santo). Central Atlantic—Ascension Island. Eastern Atlantic—Cape Verde to Gulf of Guinea and Angola. Eastern Pacific and Indo-West Pacific ( Crosnier & Forest 1966; Chace 1972, 1988; Banner & Banner 1982; Kim & Abele 1988; Manning & Chace 1990; Christoffersen 1998).

Ecological notes. The single specimen was collected in the intertidal zone in crevices of coral rubble, at a salinity of 39 psu.

Previous records. None.

Remarks. The variation in the color patterns as well as preliminary molecular data indicate that A. paracrinitus , previously considered to be a pantropical species ( Crosnier & Forest 1966; Chace 1972, 1988; Banner & Banner 1982; Kim & Abele 1988), is in fact a species complex ( Knowlton & Mills 1992; Anker 2001; Williams et al. 2001; A. Anker, in study). The single specimen from southern Bahia has narrow reddish transverse bands on the carapace and abdomen and red-brownish-white mottled major chela ( Fig. 2 D). Its taxonomic identity cannot be established until the entire A. paracrinitus complex is revised (A. Anker, pers. comm.)

Figures

FIGURE 2. Alpheid shrimps from southern Bahia, Brazil. (A) Alpheus bouvieri A. Milne-Edwards, 1878, male from Cachoeira River, Maramata Beach, Ilhéus. (B) Alpheus cristulifrons Rathbun, 1900, ovigerous female from Tassimirim Beach, Cairú. (C) Alpheus formosus Gibbes, 1850, male from Tassimirim Beach, Cairú. (D) Alpheus cf. paracrinitus Miers, 1881, male from Taipus de Fora Beach, Maraú. (E) Alpheus cf. rostratus W. Kim & Abele, 1988, ovigerous female from Taipus de Fora Beach, Maraú. (F) Salmoneus carvachoi Anker, 2007, two ovigerous individuals from Maraú River, Maraú.