Sylviocarcinus pictus (H. Milne Edwards, 1853)

Magalhães, Francinéia Zanetti Patrícia Macedo de Castro Célio, 2018, Freshwater crabs (Decapoda: Brachyura: Pseudothelphusidae, Trichodactylidae) from the state of Roraima, Brazil: species composition, distribution and new records, Nauplius (e 2018011) 26, pp. 1-19 : 13-15

Sylviocarcinus pictus (H. Milne Edwards, 1853)

( Figs. 2C , 6 )

Previous records. Magalhães and Türkay (1996b:117, fig. 38, in map); Magalhães (1998: 520, in catalogue); Magalhães (2003: 244, fig. 134, in map); Magalhães and Pereira (2007: 124, in table 4 - listed under Negro River basin); Castro and Silva (2013: 42, in table 1).

Material examined. BRAZIL, Roraima: 1 male, INPA 2425 , mun. Amajari, rio Ereú , 04°02’N 061°23’W, 16.iv.2014 , F. Zanetti and M.A.L. Santos; 2 females, INPA 1901 , mun. Normandia, Rio Maú , 03°52’23,6”N 059°36’11,8”W, 20.iii.2010 , V. Py-Daniel, U.C. Barbosa and O.S. Silva ; 1 male, 1 female, INPA 1903 , mun. Amajari, rio Coimim, downstream from confluence with rio Érico (03°39’40”N 062°27’35”W), 01.ix.1987 , V. Py-Daniel and U.C. Barbosa; 1 immat. female, MIRR 41, mun. Amajarí [03°39’11”N 061°22’17”W], road to Tepequém, 1.v.2009, leg. L.F. Guterres, P.M. Castro, F.C. Zanetti and J.S. Tavares ; 1 female, MIRR 41, mun. Amajari [03°39’11”N 061°22’17”W], road to Tepequém , igarapé under the first bridge, 1.v.2009 , P.M. Castro; 1 male (41.8:38.0), MIRR 57, mun. Amajarí, rio Trairão , (03°37’49”N 061°51’00”W), 6.ix.2009 , D.A. Lima; 2 males, 1 female, MIRR 71, mun. Amajarí, igarapé Coimbra, vila Bom Jesus / Tomás , vicinal II, 03°37’N 061°51’W, 31.x.2009 , P.M. Castro, D.A. Lima and F. Zanetti; 1 male, 5 females, MIRR 70, mun. Amajarí, igarapé Coimbra, vila Bom Jesus / Tomás , vicinal I, rio Trairão , 03°37’N 061°51’W, 31.x.2009 , P.M. Castro, D.A. Lima and F. Zanetti; 1 male, 1 immat. female, INPA 2416 , mun. Amajarí, rio Trairão, vila Maracá , 03°37’54.2”N 061°51’41.1”W, 18.iv.2015 , F. Zanetti, M.A.L. Santos, J. Santos and J. Bezerra; 1 female, INPA 2415 , mun. Amajarí, vila Maracá, Bom Jesus , vicinal II, igarapé Traírinha , 03°35’49.3”N 061°46’23.4”W, 18.iv.2015 , F. Zanetti, M.A.L. Santos, Santos, J. and J. Bezerra; 1 male, 1 female, INPA 2428 , mun. Bonfim, rio Tacutu, road to Normandia , 03°33’N 059°53’W, 18.iv.2014 , M.A.L. Santos; 1 male, INPA 1897 , mun. Alto Alegre, rio Uraricoera, Yanomami Indigenous Reserve , PIN Waikás, 03°32’58”N 063°10’11”W, 23.v.1987 , V. Py-Daniel and U.C. Barbosa ; 1 male, 1 female, MIRR 67, mun. Amajarí, serra Tepequém, SESC Ecological Station , 03°27’N 061°41’W, 30.x.2009 , P.M.Castro and R.D. Souza ; 2 males, 2 females, MIRR 46,mun. Bonfim, urban center, rio Tacutu (03°21’20”N 059°49’51”W), 30.v.2009 , A.M. Silva, F.S. Pinto and P. R.P. Andrade ; 2 males, MIRR 38, mun. Bonfim, urban center, rio Tacutu (03°21’20”N 059°49’51”W), 15.iv.2009 , A.M. Silva, F.S. Pinto and P. R.P. Andrade ; 3 females, MIRR 34, mun. Bonfim, urban center, rio Tacutu (03°21’20”N 059°49’51”W), 28.ii.2009 , A.M. Silva, F.S. Pinto and P. R.P. Andrade ; 2 males, MIRR 33, mun. Bonfim, rio Tacutu , 03°21’19”N 059°49’56”W, 15.iv.2009 , A. Mariza and P. Ricardo; 2 males, 1 female, INPA 2418 , mun. Bonfim, rio Tacutu , 03°21’14.8”N 059°49’57.4”W, 7.iv.2015 , F. Zanetti and S.C. Emidio; 3 males 1 female, INPA 1899 , mun. Alto Alegre, Yanomami Indigenous Reserve, rio Uraricoera , PIN Palimi-ú, 03°20’03”N 062°58’16”W, 24.v.1987 , V. Py-Daniel and U.C. Barbosa ; 1 male, MIRR 18, mun. Boa Vista, Passarão, mouth of igarapé Cajual (03°10’49”N 060°33’14”W), 11.xi.2006 , M. R.C. Barreto-Netto ; 1 male, INPA 1902 , mun. Bonfim, igarapé Surrão , BR 401 road, 02°51’46,4”N 060°33’32,0”W, 21.iii.2010 , V. Py-Daniel, U.C. Barbosa and O.S. Silva ; 1 male, MIRR 14, mun. Boa Vista [02°49’02”N 060°39’54”W], igarapé Branco , EMBRAPA region, 8.x.2006 , W. R. Souza ; 4 males, INPA 2431 , mun. Mucajaí, vila Tamandaré, vicinal Tronco , km 15, igarapé unnamed, 02°34’53”N 060°58’00”W, 11.i.2015 , F. Zanetti, T.E. Souza, T. E. Souza and I.Z. Emidio ; 2 males, MIRR 65, mun. Mucajaí, vila Tamandaré (02°34’45”N 060°58’08”W), igarapé Raimundo , 10.x.2009 , S.C. Emídio; 2 males, 1 female, INPA 1898 ; mun. Cantá, rio Quitauaú, Confiança (02°34’05”N 060°38’09”W), 18.iii.1992 , J. Zuanon and J.A.A. Gomes; 1 male, MIRR 36, mun. Mucajaí, rio Mucajaí, 2 km upstream from bridge on road Mucajaí-Boa Vista (02°33’47”N 060°55’43”W), 7.xii.2008 , W. R. Souza ; 2 females, MIRR 54, mun. Mucajaí, igarapé Arraia, Apiaú region , vicinal I (02°27’23’’N 060°56’29’’W), 29.viii.2009 , D.A.Lima, F. Zanetti and A.S. Sales; 1 male, MIRR 2, mun. Mucajaí, igarapé Sumaúma, sítio Três Irmãos , Rufina region , 02°26’27.50”N 060°56’17.06”W, 05.xi.2006 , L.F. R. Guterres and P.M. Castro ; 4 males, 2 females, MIRR 56, mun. Mucajaí, fazenda Tamandaré, igarapé Perdido , Apiaú region , vicinal I, 02°26’27.50”N 060°56’17.06”W, 29.viii.2009 , D.A. Lima, F. Zanetti, C.S. Rufino and B.E. Lima; 1 male, 1 female, MIRR 79, mun. Mucajaí, fazenda Tamandaré, igarapé Perdido , Apiaú region , vicinal I, 02°26’27.50”N 060°56’17.06”W, 28.viii.2010 , P.M. Castro, Otaviano, A., D.A. Lima, F. Zanetti and Tavares, J.S.; 4 males, 3 females, MIRR 80, mun. Mucajaí, fazenda Tamandaré, igarapé Perdido , Apiaú region , vicinal I, 02°26’27.50”N 060°56’17.06”W, 28.viii.2010 , P.M. Castro, Otaviano, A., D.A. Lima, F. Zanetti and Tavares, J.S.; 1 female, MIRR 81, mun. Mucajaí, fazenda Tamandaré, igarapé Perdido , Apiaú region , vicinal I, 02°26’27.50”N 060°56’17.06”W, 28.viii.2010 , P.M. Castro, Otaviano, A., D.A. Lima, F. Zanetti and Tavares, J.S.; 3 males, MIRR 53, mun. Mucajaí, igarapé Perdido, Apiaú region , vicinal I, 02°26’27.50”N 060°56’17.06”W, 28.viii.2009 , P.M. Castro, D.A. Lima and F. Zanetti; 3 males immat., MIRR 58, mun. Mucajaí, igarapé Perdido, Apiaú region , vicinal I, 02°26’27.50”N 060°56’17.06”W, 19.ix.2009 , D.A. Lima, F. Zanetti and J.S. Tavares; 1 female, MIRR 59, mun. Mucajaí, igarapé Perdido, Apiaú region , vicinal I, 02°26’27.50”N 060°56’17.06”W, 19.ix.2009 , D.A. Lima, F. Zanetti, J.S. Tavares and A.S. Sales; 1 male, 1 female, INPA 2417 , mun. Cantá, fazenda Laçador, Açude , 02°07’N 060°50’W, 24.v.2015 , M.G.S. Silva and F.P.L. Santos; 1 male (40.3:36.0), INPA 1900 , mun. Caracaraí [01°49’04”N 061°07’32”W], BR-174 road, km 530, 12.xi.2005 , E. Ferreira; 3 males, INPA 2427 , mun. São Luiz do Anauá, vicinal 21, igarapé São Luizão , 01°05’N 060°00’W, 31.i.2015 , F. Zanetti, M.A.L. Santos, I. R. Almeida and S.C. Emidio; 1 immat. male, INPA 2414 , mun. Caracaraí, Barrento, rio Xeriuiní, lower rio Branco , 00°51’N 061°57’W, 25.iii.2014 , F. Zanetti and M.A.L. Santos; 1 female, INPA 2421 , mun. Caroebe, rio Caroebe, sítio Sumaúma , 00°50’44.2”N 059°42’23.7”W, 03.ii.2015 , F. Zanetti , M.A.L. Santos, I. R. Almeida and S.C. Emidio ; 1 male (42.7:37.7), INPA 2426 , mun. São João da Baliza, rio Mata Fome , vicinal 26, 00°40’N 060°03’W, 28.iv.2015 , F. Zanetti, M.A.L. Santos, S.C. Emidio and P.M. Castro; 11 males, 7 females, INPA 2429 , mun. Caroebe, Entre Rios, vicinal 13, igarapé Espanta Moleque , 00°35’N 059°43’W, 2.ii.2015 , F. Zanetti , M.A.L. Santos, I. R. Almeida and S.C. Emidio ; 3 males (1 ad., 2 immat.), 3 immat. females, INPA 2424 , mun. Caroebe, vicinal 35, igarapé Taboca , 00°35’N 059°43’W, 03.ii.2015 , F. Zanetti , M.A.L. Santos, I. R. Almeida and S.C. Emidio ; 2 males, 2 females, INPA 2419 , mun. Rorainópolis, left bank of rio Jauaperi , 00°31’N 060°27’W, 29.iv.2015 , F. Zanetti, M.A.L. Santos, S.C. Emidio and P.M. Castro; 6 males, 4 females, INPA 2423 , mun. Caracaraí, paranã Preguiça, lower rio Branco , 00°29’N 061°39’W, 27.iii.2014 , F. Zanetti and M.A.L. Santos.

Distribution. Venezuela, Guyana, French Guiana, Colombia, Peru, Bolivia, Brazil (Amapá, Amazonas, Pará, Maranhão, Piauí, Rondônia, Roraima) ( Magalhães and Türkay, 1996b; Mora-Day et al., 2008). Additional records of the species in the state of Roraima were presented by Magalhães and Türkay (1996) from the Surumu and Branco Rivers.

Remarks. The G1s of the specimens studied herein ( Fig. 2C ) are morphological highly similar to the G1 described and illustrated by Magalhães and Türkay (1996b).

Sylviocarcinus pictus is one of the most common and widespread species of Trichodactylidae , occurring in the Amazon River basin and in coastal river basins of northern South America, in Venezuela, Guyana and French Guiana ( Magalhães and Türkay, 1996b; Mora-Day et al., 2008). It is also broadly distributed in Roraima ( Fig. 6 ). The species has been recorded from both slopes of the Serra Pacaraima and Serra Acari, with occurences in the Cuyuni River (Mora-Day et al., 2008), Rupununi River ( Magalhães and Türkay, 1996b), and upper Essequibo River ( Lasso et al., 2008) basins on the Venezuelan and Guyanan sides, and in the Branco River and Jauaperi River, Uatumã River and Trombetas River basins ( Magalhães and Türkay, 1996b; this study) on the Brazilian side. However, it does not occur in tributaries of the Orinoco River with headwaters in the Guyana Shield as suggested by its absence in surveys recently done in some river basins of this region ( Magalhães and Pereira, 2003; Pereira and García, 2006; Mora-Day and Blanco-Belmonte, 2008; Mora-Day et al., 2008).

Figures

Figure 2. Male first gonopod, right side, of the trichodactylid crabs from Roraima. A, Moreirocarcinus laevifrons (Moreira, 1901), distal part, mesial view, INPA 1493; B. Poppiana dentata (Randall, 1840), distal part, mesial view, INPA 1896; C, Sylviocarcinus pictus (H. Milne Edwards, 1853), distal part, mesial view, INPA 1900; D, Valdivia serrata White, 1847, whole limb, mesio-caudal view, INPA 1505.

Figure 6. Distribution of the trichodactylid species, Sylviocarcinus pictus (H. Milne Edwards, 1853), in the state of Roraima, Brazil.