Macrobrachium acanthurus (Wiegman, 1836)

(Fig. 8C)

Palaemon acanthurus Wiegmann, 1836: 150 .

Material examined. Brazil, São Paulo: 2 ♀, CCDB 3468, Ubatuba, Rio Puruba, colls. F. Mantelatto et al., 06.xii.2011 ; 1 ♂, CCDB 2134, São Sebastião, Rio da Praia do Pinto, colls. F. Mantelatto et al., 12.vii.2006 ; 1 ♂, CCDB 384, Ilhabela (Ilha de São Sebastião), Cachoeira da Toca, colls. F. Mantelatto et al., 07.vii.2011 ; 6 ♂, CCDB 3748, Bertioga, Ribeirão dos Alhos, colls. I. Leone et al., 24.x.2011 ; 2 ♂, CCDB 3203, Iguape, Rio Mar Pequeno, ponte Iguape-Ilha Comprida, colls. F. Mantelatto et al., 18.iv.2011 ; 7 ♀, 26 j, CCDB 3206, Ilha Comprida, Rio Praia Boqueirão Norte, colls. F. Mantelatto et al., 18.iv.2011 ; 1 ♂, 1 ♀, 22 j, CCDB 3228, Ilha Comprida, Rio Praia Boqueirão Sul, colls. F. Mantelatto et al., 17.iv.2011 ; 9 ♂, 3 ♀, 11 j, CCDB 5021, Cananéia, Rio Cantagalo, colls. R. Costa et al., 21.v.2012 ; 2 ♂, 1 ♀, 25 j, CCDB 5888, Cananéia, Riacho estrada bairro São Paulo, colls. F. Mantelatto et al., 22.vii.2012; 1 ♂, CCDB 3644, Cananéia, Estrada Pariquera-Açu, tributary of Rio Baguaçu, colls. F. Carvalho et al., 10.xi.2011 .

Distribution. Western Atlantic— USA (North Carolina, South Carolina, Georgia, Florida, Mississipi, Louisiana, Texas), Mexico, Cuba, Haiti, Jamaica, Puerto Rico, St. Martin, U.S.Virgin Islands, Antigua and Barbuda, Guadeloupe, Dominica, Martinique, Trinidad and Tobago, Nicaragua, Costa Rica, Panama, Colombia, Venezuela, Suriname, and Brazil (Amapá, Pará, Maranhão, Piauí, Ceará, Rio Grande do Norte, Paraíba, Pernambuco, Alagoas, Sergipe, Bahia, Espírito Santo, Rio de Janeiro, São Paulo, Paraná, Santa Catarina, Rio Grande do Sul) (von Ihering 1897; Rathbun 1901; Luederwaldt 1929; Sawaya 1946; Holthuis 1952a, 1959; Hart 1961; Coelho 1963; Williams 1965; Mistakidis 1966; Chace & Hobbs 1969; Melo-Filho 1971; Chace 1972; Coelho & Ramos-Porto 1980; Rodriguez 1980; Abele & Kim 1986, 1989; Bond-Buckup & Buckup 1989, 1999; Coelho et al. 1990; Pereira De Barros & Braun 1997; Ramos-Porto & Coelho 1998; Bowles et al. 2000; Valencia & Campos 2007; Almeida et al. 2013; Pileggi et al. 2014; Pimentel et al. 2014; Poupin 2018).

Remarks. Previous records from the coast of São Paulo include Ubatuba, São Sebastião, Ilhabela (Ilha de São Sebastião), Cubatão, Santos, Itanhaém, Peruíbe, Registro, Iguape, Ilha Comprida, and Pariquera-Açu (von Ihering 1897 as Palaemon acanthurus; Luederwaldt 1929; Sawaya 1946; Valenti et al. 1989; Rocha & Bueno 2004; Ferreira et al. 2010; Pileggi & Mantelatto 2010; Pileggi et al. 2014; Mossolin et al. 2016). Sequences accession number (GenBank): CCDB 2134—16S (GU929449), COI (GU929470) (Vergamini et al. 2011).