Alpheus cf. armillatus H. Milne Edwards, 1837

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 : 7-8

Alpheus cf. armillatus H. Milne Edwards, 1837 [in H. Milne Edwards, 1834 –1840]

Alpheus armillatus H. Milne Edwards, 1837 [in H. Milne Edwards, 1834 –1840]: 354.

Material examined. 1 m, 1 f, 01.VIII.2008, Cairú, Triana River, Boipeba Island, MZUESC 1267; 3 m, 3 f, 01.VIII.2008, Cairú, Triana River, Boipeba Island, MZUESC 1268; 2 m, 7 f, 02.VIII.2008, Cairú, Moreré Beach, Boipeba Island, MZUESC 1292; 2 m, 1 f, 02.VIII.2008, Cairú, Moreré Beach, Boipeba Island, MZUESC 1293; 5 m, 4 f, 02.VIII.2008, Cairú, Moreré Beach, Boipeba Island, MZUESC 1294; 2 f, 03.VIII.2008, Cairú, Tassimirim Beach, Boipeba Island, MZUESC 1318; 5 m, 8 f, 03.VIII.2008, Cairú, Tassimirim Beach, Boipeba Island, MZUESC 1319; 8 m, 8 f, 3 juv, 05.V.2008, Itacaré, Concha Beach, mouth of Contas River, MZUESC 1205; 1 f, 05.V.2008, Itacaré, Concha Beach, mouth of Contas River, MZUESC 1206; 1 ni, 06.VI.2003, Ilhéus, Sirihyba Beach, Olivença, MZUESC 178; 2 f, 16.V.2007, Santa Cruz Cabrália, Coroa Vermelha Beach, MZUESC 864; 1 ni, 16.V.2007, Santa Cruz Cabrália, Coroa Vermelha Beach, MZUESC 865; 2 m, 4 f, 1 juv, 08.III.2008, Santa Cruz Cabrália, João de Tiba River near Santo André Beach, MZUESC 1169; 2 m, 1 f, 17.V.2007, Porto Seguro, Buranhem River, Municipal Pier of Porto Seguro, MZUESC 924; 3 m, 6 f, 23.XI.2007, Prado, Cumuruxatiba Beach, MZUESC 1062; 1 f, 28.VIII.2007, Caravelas, Caravelas River, St. 1, MZUESC 972; 2 m, 3 f, 28.VIII.2007, Caravelas, Caravelas River, Farol Abrolhos Iate Clube, St. 2, MZUESC 984; 17 m, 8 f, 28.VIII.2007, Caravelas, Caravelas River, Farol Abrolhos Iate Clube, St. 2, MZUESC 985; 3 f, 28.VIII.2007, Caravelas, Caravelas River, Farol Abrolhos Iate Clube, St. 2, MZUESC 986; 1 f, 28.VIII.2007, Caravelas, Caravelas River, Farol Abrolhos Iate Clube, St. 2, MZUESC 987; 2 m, 2 f, 29.VIII.2007, Caravelas, Caravelas River, Barra de Caravelas, St. 4, MZUESC 1006; 1 m, 30.VIII.2007, Caravelas, Pontal do Sul, MZUESC 1018; 1 f, 30.VIII.2007, Caravelas, Pontal do Sul, MZUESC 1019; 1 f, 2 m, 28.VIII.2007, Caravelas, Caravelas River, St. 1, MZUESC 1087; 3 m, 6 f, 16 ni, 19.III.2007, Nova Viçosa, Pontal da Barra Beach, St. 2, MZUESC 822. See report by Almeida et al. (2006).

Distribution. Western Atlantic—Bermuda, North Carolina to Brazil (Fernando de Noronha, Ceará to Santa Catarina) ( Christoffersen 1998).

Ecological notes. The specimens were collected on reefs, under rocks, wood debris and rubble, on sand and mud, on Halimeda sp., in crevices of dead coral rubble, on jetties (on an unidentified octocoral), in rock crevices, and on calcareous algae concretions. Salinity range: 19–39 psu.

Previous records. Abrolhos ( Smith 1869, as A. heterochaelis ; Gomes Corrêa 1972, as A. armillatus ) [see Christoffersen 1984]; Abrolhos Bank (RAP, St. 36) ( Young & Serejo 2005); Ilhéus (Almeida et al. 2006, as A. armillatus ); Camamu Bay ( Almeida et al. 2007b, as Alpheus cf. armillatus )

Remarks. Alpheus armillatus is a large species complex with six nominal species in the eastern Pacific and four nominal species in the western Atlantic, two of them currently seen as synonyms of A. armillatus ( Anker 2001; Mathews, 2006; Mathews & Anker 2009). However, molecular data suggest the existence of at least 19 distinct ESUs within this complex, including 11 in the western Atlantic ( Mathews & Anker 2009). The western Atlantic species of the A. armillatus complex are currently being revised (A. Anker, pers. com.). Alpheus cf. armillatus was the most abundant alpheid in our samples. Two distinct color patterns of A. cf. armillatus indicate existence of at least two species in Bahia .