Ambidexter symmetricus Manning & Chace, 1971

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 : 24-26

Ambidexter symmetricus Manning & Chace, 1971

( Fig. 9 )

Ambidexter symmetricus Manning & Chace, 1971: 3 , figs. 1–2.

Material examined. 1 ni, 18.VIII.2007, Maraú, Tanque Island, T2, MZUESC 1106; 1 m, 17.VIII.2007, Maraú, Tanque Island, T3, MZUESC 1110.

Distribution. Western Atlantic—Florida to Brazil (Pernambuco to Santa Catarina) ( Christoffersen 1998).

Ecological notes. The material examined was collected at a depth of 0.8–1 m and salinity 31–32 psu. The type of bottom was not recorded.

Previous records. None.

Remarks. An identification key to the Brazilian Processidae was provided by Almeida & Bezerra (2011). Ambidexter Manning & Chace, 1971 is readily recognized by the chelate first pereiopods (vs. only one, usually the right, of the first pereiopods chelate in Processa Leach, 1815 and Nikoides Paulson, 1875 ) ( Manning & Chace 1971).

Figures

FIGURE 9. Ambidexter symmetricus Manning & Chace, 1971, male (CL = 4.2 mm) (MZUESC 1110), Tanque Island, Maraú, state of Bahia, Brazil. (A) head and cephalic appendages, dorsal view; (B) head and cephalic appendages, lateral view; (C) right third maxilliped, lateral view; (D) right pereiopod 1, lateral view; (E) left pereiopod 1, lateral view. Scale bars: A – C = 1 mm; D, E = 0.5 mm.