Macrobrachium olfersii (Wiegmann, 1836) (Fig. 8F) Palaemon olfersii Wiegmann, 1836: 150. Material examined. Brazil, São Paulo: 2 ♂, 8 ♀ (5 ♀ ov), 15 adults, 24 j, CCDB 3469, Ubatuba, Rio Puruba, colls. F. Mantelatto et al., 06.vii.2011; 1 ♂, CCDB 5250, Ubatuba, Rio da Praia do Lamberto, colls. F. Carvalho et al., 22.iv.2012; 1 ♂, 5 ♀ (4 ♀ ov), CCDB 5976, Ubatuba, Rio Praia do Lamberto, colls. F. Carvalho et al., 09.iv.2013; 1 ♂, CCDB 2138, São Sebastião, Rio do Curral, colls. F. Mantelatto et al., 26.vi.2006; 6 ♂, 1 ♀, CCDB 3142, Ilhabela (Ilha de São Sebastião), Rio Castelhano, colls. F. Mantelatto et al., 21.ii.2011; 2 ♂, 7 ♀ (3 ♀ ov), 96 j, CCDB 3749, Santos, Rio Preto, colls. F. Carvalho et al., 23.x.2011; 5 ♂, 6 ♀ (1 ♀ ov), 1 j, CCDB 3750, Santos, Rio Branco, colls. F. Carvalho et al., 23.x.2011; 2 ♂, CCDB 5342, Praia Grande, Rio Branco, colls. N. Rossi et al., 23.x.2011; 6 ♂, 5 ♀ (1 ♀ ov), CCDB 3215, Pariquera-Açú, Rio Iririaia-Mirim, colls. F. Mantelatto et al., 18.iv.2011; 5 ♂, 8 ♀ (5 ♀ ov), 4 j, CCDB 3670, Cananéia, tributary of the Rio Baguaçu, colls. T. Magalhães et al., 10.xi.2011; 4 ♂, 10 ♀ (8 ♀ ov), 12 adults, 49 j, CCDB 318, Cananéia, Rio Itapitangui, colls. F. Mantelatto et al., 29.viii.2011. Distribution. Western Atlantic— USA (North Carolina, Florida, Mississipi, Louisiana, Texas), Mexico, Puerto Rico, Curaçao, Bonaire, Guatemala, Nicaragua, Costa Rica, Panama, Colombia, Venezuela, Guyana, Suriname, French Guiana, and Brazil (Amapá, Pará, Piauí, Ceará, Rio Grande do Norte, Pernambuco, Alagoas, Sergipe, Bahia, Espírito Santo, Rio de Janeiro, São Paulo, Paraná, Santa Catarina, Rio Grande do Sul) (von Ihering 1897; Moreira 1901; Rathbun 1901; Luederwaldt 1929; Sawaya 1946; Holthuis 1952a, 1959; Coelho 1963; Anderson & Fillingame 1980; Rodriguez 1980; Williams 1984; 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; Rossi & Mantelatto 2013; Poupin 2018). Remarks. Previous records from the coast of São Paulo include Ubatuba, Caraguatatuba, São Sebastião, Ilhabela (Ilha de São Sebastião e Ilha dos Búzios), Cubatão, Santos, Peruíbe, Pariquera-Açu, Iguape, Ilha Comprida, and Cananéia (Ilha do Cardoso) (von Ihering 1897 as Palaemon olfersi; Luederwaldt 1929; Sawaya 1946; Rocha & Bueno 2004; Melo & Brossi-Garcia 2005 as Macrobrachium birai; Ferreira et al. 2010; Pileggi & Mantelatto 2010, 2012; Pileggi et al. 2014; Mossolin et al. 2016). Due numerous examples in the literature (taxonomic and non-taxonomic studies) of spelling variants, the correct spelling of this species was standardized to M. olfersii (see Rossi et al. 2016 for details). Sequences accession number (GenBank): CCDB 2138—16S (GU929466), COI (GU929554) (Vergamini et al. 2011).

Published as part of Mantelatto, Fernando L. & Al, Et, 2022, Checklist of decapod crustaceans from the coast of the São Paulo state (Brazil) supported by integrative molecular and morphological data: V. Dendrobranchiata and Pleocyemata [Achelata, Astacidea, Axiidea, Caridea (Alpheoidea and Processoidea excluded), Gebiidea, Stenopodidea], pp. 1-74 in Zootaxa 5121 (1) on pages 37-38, DOI: 10.11646/zootaxa.5121.1.1, http://zenodo.org/record/6399728