Macrobrachium acanthurus ( Wiegmann, 1836 )

Ferreira, Rodrigo Simões, Vieira, Rony Roberto Ramos & D’Incao, Fernando, 2010, The marine and estuarine shrimps of the Palaemoninae (Crustacea: Decapoda: Caridea) from Brazil, Zootaxa 2606, pp. 1-24 : 8-9

Macrobrachium acanthurus ( Wiegmann, 1836)

Palaemon acanthurus Wiegmann, 1836: 150 .

Macrobrachium longidigitum Bate, 1868: 365 .

Macrobrachium acanthurus Pearse, 1911: 111 ; Sawaya, 1946: 405; Holthuis, 1950a: 12, 1950c: 35, 1952: 45; Chace, 1972: 20; Ramos-Porto, 1980: 295; Ramos-Porto & Palácios, 1981: 281; Williams, 1984: 66; Abele & Kim, 1986: 14; Bond-Buckup & Buckup, 1989: 887, 1999: 312; Ramos-Porto & Coelho, 1990: 101, 1998: 331; Bowles et al., 2000: 159; Melo, 2003: 338; Nizinski, 2003: 103; Almeida et al., 2006: 8; Almeida et al., 2007: 10 .

Material examined. PARÁ: Boa Vista, 1 male, (MZUSP-1936); PIAUÍ: Jaicos, BR-1102, 5 indeterminate, (MNRJ-925); CEARÁ: Fortaleza, 1 male, 2 females, 1 ovigerous female, (MNRJ-935); Fortaleza, 7 males, 1 female, 2 ovigerous females, (MNRJ-926); RIO GRANDE DO NORTE: Natal, Lagoa do Jiqui, 14 males, 21 ovigerous females, (MNRJ-962); PERNAMBUCO: Pernambuco, 4 males, 2 ovigerous females, (MNRJ-930); Goiana, Rio Goiana, 4 males, 1 female, 1 ovigeorus female, (MNRJ-965); Ponta de Pedras, 1 male, (MZUSP- 3887); Recife, 4 males, (MNRJ-929); Recife, 1 male, 1 female, 1 ovigerous female, (MNRJ-907); Tamandaré, Rio Mamucabinha, 4 males, (FURG-1284); ALAGOAS: Mundaú, 1 male, (MZUSP-7124); Mundaú, 1 male, (MZUSP-7126); Mundaú, 1 male, (MZUSP-7132); Maceió, Lagoa Mundaú, 1 ovigerous female, (MNRJ- 960); São Miguel dos Campos, Rio Jequiá, 4 males, 2 females, (MNRJ-860); SERGIPE: Fazenda Boa União, 2 males, 2 females, (MNRJ-912); BAHIA: Mar Grande, 1 male, 1 ovigerous female, (MNRJ-909); Ilhéus, 3 males, 3 females, (MNRJ-931); Ilhéus, 6 males, (MNRJ-910); Ilhéus, Rio Cachoeira, 7 males, 2 females, (MNRJ-16782); Ilhéus, 4 males, 2 females, 2 ovigerous females, (MZUSP-1256); Mucuri, Rio Mucuri, 1 male, 1 female, (MZUSP-9164); Mucuri, Rio Mucuri, 2 males, 5 females, 1 ovigerous female, (MZUSP- 9162); ESPÍRITO SANTO: Espírito Santo, 1 ovigerous female, (MNRJ-911); Linhares, Santa Cruz, 1 female, (MNRJ-959); Linhares, 2 males, 1 female, 7 ovigerous females, (MZUSP-1937); (21°15’S, 40°22’W), 1 male, (MNRJ-3367); RIO DE JANEIRO: Atafona, 1 male, 1 female, (MZUSP-1910); Atafona, 1 male, (MZUSP-1911); Atafona, Lagoa Pontal, 5 indeterminate, (MZUSP-6473); Atafona-Campos, 1 male, 1 female, (MNRJ-964); Campos, Lagoa Verde, 1 male, (MNRJ-875); Rio Paraíba, 3 males, 2 ovigerous females, (MZUSP-1926); Casimiro de Abreu, 2 males, 1 female, (MNRJ-4160); Ilha do Peçanha, 1 ovigerous female, (MZUSP-1912); Macaé, 3 males, 3 females, (MNRJ-882); Maricá, Lagoa de Maricá, 1 female, (MZUSP-1932); São Gonçalo, Rio Guaxindiba, 2 females, (MNRJ-924); Caxias, 2 males, (MNRJ-916); Rio de Janeiro, Lagoa Rodrigo de Freitas, 2 males, 2 females, (MNRJ-883); Guaratiba, 1 ovigerous female, (MNRJ-922); Pedra de Guaratiba, 1 ovigerous female, (MNRJ-961); Angra do Reis, Rio do Frade, 1 female, (MNRJ-977); Ilha Grande, 2 females, 1 ovigerous female, (MNRJ-3342); Ilha Grande, 1 male, (MZUSP- 206); Sepetiba, Praia Dona Luiza, 1 ovigerous female, (MNRJ-872); Ilha Grande, Lagoa Verde, 1 male, (MZUSP-10287); Parati, 1 male, 1 female, (MNRJ-919); Parati, Rio Parati-Mirim, 2 males, (MNRJ-4166); SÃO PAULO: Ubatuba, 1 male, (MZUSP-229); Perus, 1 male, (MZUSP-201); Rio Jabatinga, (23°34’05”S, 45°16’14,9”W), 6 males, (MZUSP-16034); São Sebastião, 6 males, 9 females, (MZUSP-15154); São Sebastião, 1 male, (MZUSP-942); São Sebastião, 2 indeterminate, (MZUSP-228); São Sebastião, 2 females, (MZUSP-945); entre São Sebastião e Guarujá, (23°48’55,6”S, 45°31’34,7”W), 1 male, 1 female, (MZUSP- 16051); Itanhaen, 1 female, (MZUSP-1931); Estação Ecológica Juréia-Itatins, Base do Arpoador, 7 males, 1 indeterminate, (MZUSP-13942); Estação Ecológica Juréia-Itatins, 2 males, (MZUSP-16184); Serra da Juréia, 1 indeterminate, (MZUSP-9560); Iguape, 1 male, (MZUSP-569); Ilha Comprida, (25°00’50”S, 47°52’32”W), 3 males, 2 females, 3 ovigerous females, (MZUSP-15822); Ilha Comprida, Rio Capivatú, 4 males, 8 females, 4 ovigerous females, (MZUSP-13941); PARANÁ: Bacia de Paranaguá, 1 ovigerous female, (FURG-2307); SANTA CATARINA: Santa Catarina, 1 male, (MZUSP-5960); Santa Catarina, 1 ovigerous female, (MZUSP- 5961); Santa Catarina, 1 male, (MZUSP-5956); Santa Catarina, 1 male, (MZUSP-5958); Santa Catarina, 1 male, (MZUSP-5954); Itajaí, 1 indeterminate, (MZUSP-219); Itajaí, 4 males, (MZUSP-1258); Itajaí, Rio Itajaí-Açu, 1 male, 1 female, (MNRJ-934); Camboriú, Rio Camboriú, 1 male, 1 female, (FURG-375); Bombinhas, Porto Belo, 1 male, 1 female, (FURG-374); Bombinhas, Porto Belo, 18 females, (FURG-477); RIO GRANDE DO SUL: Lagoa dos Patos, Marambaia, 1 male, (FURG-2101); Lagoa dos Patos, Prado, 1 male, (FURG-2100); Lagoa dos Patos, Prado, 1 ovigerous female, (FURG-3066).

Diagnosis. Rostrum almost straight, reaching slightly beyond scaphocerite, dorsal margin with 9 to 11 teeth, first 2 teeth behind orbit, ventral margin with 4 to 7 teeth equally distributed. Carpus of second pereopods is about 1.5 times as long as the merus, fingers slender covered with pubescence, bearing 4 small teeth on cutting edge of dactyl.

Distribution. Western Atlantic Ocean: USA (North Carolina, South Carolina, Georgia, Florida, Alabama, Mississipi, Louisiana, Texas), Mexico, Honduras, Nicaragua, Panama, Bahamas, Cuba, Jamaica, Haiti, Dominican Republic, Puerto Rico, Virgin Islands, Colombia, Venezuela, Surinam, Brazil (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).