Macrobrachium brasiliense (Heller, 1862)

Santos, Maria Aparecida Laurindo dos, Castro, Patrícia Madedo de & Magalhães, Célio, 2018, Freshwater shrimps (Crustacea, Decapoda, Caridea, Dendrobranchiata) from Roraima, Brazil: species composition, distribution, and new records, Check List (Washington, D. C.: 1974) 14 (1), pp. 21-35 : 26-27

Macrobrachium brasiliense (Heller, 1862) ( Figs 3D–G, 9)

Previous records. Castro and Silva (2013: as M. inpa in p. 41, and M. brasiliense in p. 42).

Identification characters ( Fig. 3D–G). Rostrum straight, short, slightly directed downwards, reaching (or failing short of reaching) distal margin of scaphocerite; rostral formula: 8–13(1–3 post-orbital teeth)/2–5. Carapace with antennal and hepatic teeth present, anterolateral portion roughened by numerous spinules; abdomen also roughened by spinules, pleura of second somite enlarged and overlapping pleuron of first and third somites. Telson with posterior margin distinct, ending in a small acute point, usually overreached by inner pair of posterolateral spines. P2 (larger cheliped) similar in shape, unequal in size; larger cheliped overreaching scaphocerite with entire length of carpus, palm subcylindrical in crosssection, fingers a little less than half the length of palm, with row of tubercles on cutting edges.

Material examined. 1 male ( INPA 2347), Amajarí, igarapé Tepequém, tributary of rio Amajarí, [03°41ʹ28.13ʺ N, 061°42ʹ05.22ʺ W], 24-II-2011, colls. A.A. Otaviano, F.C. Zanetti and A. Sales; 11 males ( MIRR 274), Amajarí, unnamed igarapé, tributary of rio Amajarí, [03°38ʹ41.80ʺ N, 061°41ʹ38.16ʺ W, 24-IX-2010, colls. D. Teixeira and O. Grigio Jr.; 1 male, 8 females (1 ovig.) ( MIRR 195), Amajarí, vila Bom Jesus, igarapé Coimbra, tributary of rio Trairão, 3°37ʹ03.0ʺ N, 061°49ʹ46.5ʺ W, 31-X-2009, colls. P.M. Castro and A.A. Otaviano; 6 males, 17 females ( INPA 2396), Alto Alegre, rio Rainha do Inajá, cachoeira Macabei, tributary of rio Mucajai, [3°15ʹ44.803ʺ N, 063°53ʹ51.69ʺ W], 21-IV-1994, colls. V. Py-Daniel et al.; 1 male ( MIRR 324), Boa Vista, Cachoeirinha, rio Cauamé, 02°52ʹ N, 060°44ʹ W, 31-I-2011, colls. P.M. Castro, F.C. Zanetti, A.A. Otaviano and D. Teixeira; 11 males, 30 females, 11 immat. spec. ( INPA 2350), Boa Vista, urban area, praia Caçari, rio Cauamé, 02°52ʹ N, 060°39ʹ W, 31-I-2011, colls. P.M. Castro et al.; 3 males, 3 females, 1 immat. spec. ( INPA 2349), Cantá, fazenda Rossi, igarapé Azul, tributary of rio Branco, [02°47ʹ36.589ʺ N, 060°38ʹ26.59ʺ W], 05-IV-2008, coll. F.A.G. Melo; 1 male ( INPA 2401), Alto Alegre, serra dos Surucucus, Yanomami Indigenous Area, rio Mucajaí basin [02°47ʹ N, 063°40ʹ W], date unknown, colls. V. Py-Daniel et al.; 4 males, 6 females, 2 immat. spec. ( INPA 2404), Boa Vista, farm 29 km from Boa Vista, unnamed igarapé, tributary of rio Branco, [02°46ʹ08.53ʺ N, 060°39ʹ22.63ʺ W], 29- III-1992, colls. J.A.A. Gomes, J. Zuanon, J. Sulivane and J. Albert; 1 male, 2 females ( INPA 2387), Boa Vista, Água Boa, igarapé in sítio Marajoara, tributary of rio Branco, 02°38ʹ44.4ʺN, 060°48ʹ57.3ʺW, 30-XI-2014, coll. M.A.L. Santos; 1 male ( INPA 2395), Cantá, igarapé Azul, tributary of rio Branco, BR 401 road, [02°36ʹ34.93ʺ N, 060°36ʹ12.09ʺ W], 29-X-1987, colls. V. Py-Daniel et al.; 5 males ( INPA 2399), Alto Alegre, Xitei/Xidea (Yanomami indigenous village), Watatas, rio Parima, 02°36ʹ24ʺ N, 063°52ʹ17ʺ W, 11-IV-2002, colls. V. Py-Daniel et al.; 6 spec. ( INPA 2400), Alto Alegre, Homoxi (Yanomami indigenous village), upper rio Mucajaí (Uxua-ú), tributary of rio Mucajaí, 02°29ʹ N, 063°43ʹ W, IV-2002, coll. W. Milliken; 6 males, 1 female, 1 immat. spec. ( MIRR 211), Mucajai, Apiaú region, igarapé Perdido, tributary of rio Mucajai, [02°26ʹ27.502ʺ N, 060°56ʹ17.059ʺ W], 29-IX- 2009, colls. D. A. Lima, C. R. Araújo, E. A. Barbosa, F. C. Zanetti and J.S. Tavares; 3 immat. males ( MIRR 224), 2 spec. ( MIRR 225), Mucajaí, Roxinho region, igarapé Mota, tributary of rio Mucajaí, [02°26ʹ27.50ʺ N, 060°56ʹ17.059ʺ W], 25-VIII-2009, coll. J.C. Tavares; 3 males, 4 females ( MIRR 207), Mucajaí, Apiaú region, igarapé Perdido, tributary of rio Mucajaí, [02°26ʹ27.50ʺ N, 060°56ʹ17.059ʺ W], 19-IX-2009, coll. J. Tavares; 8 males, 5 females ( MIRR 321), Mucajaí, Rufina region, sítio 3 Irmãos, igarapé Samaúma, tributary of rio Mucajaí, [02°26ʹ27.50ʺ N, 060°56ʹ17.059ʺ W], 05-XI-2006, colls. P. M. Castro et al.; 3 males ( INPA 2374), Caracaraí, Terra Preta, igarapé Marixi, 02°21ʹ17.7ʺ N, 060°25ʹ9.4ʺ W, tributary of rio Xeriuini, 09-VI-2013, coll. F.C. Zanetti; 3 males, 9 females, 16 immat. spec. ( INPA 2386), Cantá, Confiança I, vicinal II, igarapé Nicolau, tributary of rio Branco, 02°9ʹ54.7ʺ N, 060°50ʹ04.0ʺ W, 11-III-2014, colls. F.P.L. Santos and M.B. Santos; 6 males, 13 females, 11 immat. spec. ( INPA 2375), São Luiz do Anauá, vicinal 21, igarapé Luizão, tributary of rio Anauá, 01°05ʹ27.7ʺ N, 060°00ʹ46.9ʺ W, 31-I-2015, colls. M.A.L Santos, F.C. Zanetti, S.C. Emídio, I. R.S. Almeida and B.C.A. Santos; 2 males, 3 females ( INPA 2365), Rorainópolis, rio Anauá, 00°56.724ʹ N, 060°26.258ʹ W, 28-III-2015, coll. L.F. R. Guterres; 5 males, 14 females (2377), São João da Baliza, vicinal 28, igarapé near BR 210 road, tributary of rio Caroebe, 00°55ʹ50.6ʺ N, 059°52ʹ21.5ʺ W, 29-IV- 2015, colls. M.A.L. Santos, F.C. Zanetti, P.M. Castro, S.C. Emídio and A. R. Lima; 3 males, 6 females, 4 immat. spec. ( INPA 2361), Caroebe, vicinal 35, igarapé Taboca, tributary of rio Caroebe, 00°55ʹ02.0ʺ N 059°43ʹ41.3ʺ W, 03-II-2015, colls. F.C. Zanetti, I. R.S. Almeida, M.A.L. Santos and S.C. Emídio; 26 males, 30 females, 52 immat. spec. ( INPA 2378), Caroebe, Entre Rios, igarapé Espanta Moleque, tributary of rio Jatapú, 00°54ʹ02.8ʺ N, 059°25ʹ52.9ʺ W, 02-II-2015, colls. M.A.L. Santos, F.C. Zanetti, I. R.S. Almeida, S.C. Emídio and B.C.A. Santos; 2 females ( INPA 2357), Caroebe, rio Caroebe, sítio Sumaúma, vicinal 5, 00°50ʹ44.2ʺ N, 059°17ʹ08.2ʺ W, 03-II-2015, colls. M.A.L. Santos, F.C. Zanetti, I. R.S. Almeida and S.C. Emídio; 2 males ( INPA 2354), Caroebe, Entre Rios, rio Jatapu, 00°45ʹ37.1ʺ N, 059°17ʹ08.2ʺ W, 2-II-2015, colls. M.A.L. Santos, F.C. Zanetti, I. R.S. Almeida and S.C. Emídio; 1 male, 7 females ( INPA 2364), São Luiz do Anauá, fazenda Água Limpa, rio dos Peixes, tributary of rio Jauaperí, 00°41ʹ11.5ʺ N, 060°11ʹ17.4ʺ W, 5-XII-2015; colls. M.A.L. Santos and F.K.A. Santos; 3 males ( INPA 2392), Rorainópolis, vila Colina, igarapé on vicinal 20, tributary of rio Jauaperi, 00°37ʹ16.7ʺ N, 060°29ʹ53.9ʺ W, 21-XII-2014, colls. M.A.L. Santos, B.C.A. Santos and N.L. Ferreira; 29 males, 14 females ( INPA 2362), Rorainópolis, Vila Colina, BR 174 road, rio Jauaperi, 00°30ʹ51.2ʺ N, 060°27ʹ54.9ʺ W, 29-IV-2015, colls. M.A.L. Santos, F.C. Zanetti, P.M. Castro, S.C. Emídio and A. R. Lima; 1 male, 1 female ( INPA 2331), Caracaraí, igarapé Defrento, tributary of rio Anauá, 00°00ʹ02ʺ N, 061°29ʹ19ʺ W, 24-IX-2006, coll. L. Rapp Py-Daniel; 5 males, 6 females, 9 immat. spec. ( MIRR 322), 5 spec. ( MIRR 275), 14 spec. ( MIRR 251), Caracaraí, Caicubi, igarapé Tubana, tributary of rio Jufari, [01°17ʹ09.35ʺ S, 061°55ʹ57.40ʺ W], 06-IX-2011, colls. P.M. Castro and A.A. Otaviano.

Distribution. Venezuela, Guyana, Suriname, French Guiana, Brazil (Amazonas, Amapá, Bahia, Maranhão, Mato Grosso, Pará, Paraná, Roraima, São Paulo), Colombia, Peru, Ecuador (see Pimentel and Magalhães 2014 for references; this study). The distribution in Roraima is depicted in Figure 9.

Remarks. The morphology of our specimens agrees quite well with the description provided by Holthuis (1952), García-Dávila and Magalhães (2003), and Melo (2003).

Macrobrachium brasiliense was first recorded in Ror- aima by Castro and Silva (2013) from the municipality of Mucajaí, and some of their specimens were misidentified as M. inpa . The records presented here show that the species is widely distributed in the state of Roraima ( Fig. 9).