Euryrhynchus burchelli Calman, 1907

Examined material. Municipality of Macapá: Campus Fazendinha from Instituto de Pesquisas Científícas e Tecnológicas do Estado do Amapá - IEPA (Institute for Scientific and Technological Research of the State of Amapá), Amazon well (00°02’20.21”S, 51°05’40.37”W), 17.v.1990, col. S. Borges, 3 specimens (IEPA 27) ; at the same location as the previous collection, 18.xi.1995, coll. H.P. Belo, 1 specimen (IEPA 50); Environmental Protection Area of Curiaú River, Curralinho (00°07’26.74”N, 51°06’50.18”W); at the same location as the previous collection, 22.ii.2002, cols. I.M. Vieira, O.A. Alencar and M. Abdon, 26 females with eggs (IEPA 344) ; stream in gallery forest (0°09’23,8”N, 51°02’09,5”W), 25.viii.2002, I.M. Vieira, O.A. Alencar and A.C.R. Araújo, 32 specimens (IEPA 377); floodplain of Curiaú River (00°09’21.7”N, 51°02’12.9”W), 25.vii.2002, col. I.M. Vieira, 17 males, 13 females, 10 juveniles and 7 females with eggs (IEPA 380) ; idem local (00°09’23,8”N, 51°02’09,5”W), 25.vii.2002, col. I.M. Vieira, 153 specimens (IEPA 457); region near balneary from Curiaú River (00°08’48”N, 51°02’27.4”W), 1 female (IEPA 416) ; at the same location as the previous collection, 26.vii.2002, colls. O.A. Alencar, A.C. Rabelo and O.T. Arnaud, 33 females and 11 juveniles (IEPA 420); at the same location as the previous collection, 4.v.2002, col. I.M. Vieira, 2 females with eggs and 3 specimens (IEPA 432); at the same location as the previous collection, 31.viii.2002, I.M. Vieira, 2 males, 5 females, 2 juveniles and 3 females with eggs (IEPA463); Wetland Tacacá: (00°02’14.7”S, 51°05’44.7”W), 18.vii.2002, colls. O.A. Alencar, A.C. Rabelo and O.T. Arnaud, 23 specimens (IEPA 386) ; Wetland Tacacá (00°02’14”S, 51°05’46,7”W), 18.vii.2002, colls.. O.A. Alencar, A.C. Rabelo and O.T. Arnaud, 67 specimens (IEPA 387) ; at the same location as the previous collection, (00°02’13.11”S, 51°05’39.2”W), 11 specimens (IEPA 393); at the same location as the previous collection, (00°02’14”S, 51°05’46,7”W), 2 males, 5 females, 2 juveniles and 2 females with eggs (IEPA 394); at the same location as the previous collection (00°02’13.01”S, 51°05’39.2”W), 3 males, 1 female, 2 juveniles and 1 female with eggs (IEPA 501); Lagoon of Índios (00°01’48,4”N, 51°06’20,3”W), 3.iv.2004, A.C.R. Araújo and O.T.C. Arnaud, 12 males, 36 females and 18 females with eggs (IEPA 496) ; idem (00°01’42.8”N, 51°06’22.4”W), 23 females, 11 juveniles and six females with eggs (IEPA 497); at the same location as the previous collection (00°02’37,4”N, 51°06’19,0”W), 22.v.2004, A.C.R. Araújo, O.T.C. Arnaud and I.M. Vieira, 5 males, 7 females and 3 juveniles (IEPA 511); at the same location as the previous collection, (00°01’48.4”N, 51°06’20.3”W), 22.v.2004, A.C.R.Araújo, O.T.C.Arnaud and I.M. Vieira, 7 males, 14 females and 9 females with eggs (IEPA 514); at the same location as the previous collection (00°01’45.1”N, 51°06’20.1”W), 22, v.2004, colls. A.C.R. Araújo, O.T.C.Arnaud and I.M. Vieira, 1 male, 3 females and 2 females with eggs (IEPA 515); at the same location as the previous collection (00°02’41.4”N, 51°06’18.0”W), 22, v.2004, A.C.R. Araújo, O.T.C. Arnaud and I.M. Vieira, 5 females and 5 females with eggs (IEPA 523) . Municipality of Amapá: Stream Manoel Capu na BR156, Farm Espírito Santo (02°02’47”N, 50°54’09”W), 18.vi.2002, colls. I.M. Vieira, O.A. Alencar and O.M. Costa, 1 female with eggs (IEPA 358) .— Municipality of Ferreira Gomes: stream in gallery forest, Farm Itatupã (00°40’43”N, 51°14’60”W), 7.vi.2002, colls. I.M. Vieira, O.A. Alencar and O.M. Costa, 2 males, 4 females, 1 juvenile and 2 females with eggs (IEPA 376) .— Municipality of Cutias: Bom Jesus do Tabaco (01°19’23”N, 50°16’23”W), 27.iv.2004, I.M. Vieira and C.S. Gama, 4 specimens (IEPA 1297) ; at the same location as the previous collection (01°20’31”N, 50°18’20”W), 24.iv.2004, I.M. Vieira and C.S. Gama, 4 specimens (IEPA 1411) .— Municipality of Tartarugalzinho: Lake Novo (01°26’10.3”N, 50°34’22.7”W), 25.iv.2004, coll. I.M. Vieira, 1 male (IEPA 575) ; Lake Novo (01°23’19.79”N, 50°38’52.14”W), 25.x.2004, coll. I.M. Vieira, 3 specimens (IEPA 764) .— Municipality of Laranjal do Jari: Jari River (0°50’05”S, 52°32’34”W), 26.x.2007, coll. I.M. Vieira, 35 specimens (IEPA 1164) ; lake on the right bank of the Jari River, close to the Padaria Community (0°50’40”S, 52°28’48”W), 29.x.2007, coll. I.M. Vieira, 7 specimens (IEPA 1165) ; tributary stream of River Jari (0°51’36.20”S, 52°32’18.11”W), 15.vii.2008, colls. I.M. Vieira and J.E.M Wanzeler, 2 specimens (IEPA 1206) ; right bank of the Jari River (0°51’36.4”S, 52°32’11.7”W), 8.iv.2008, colls. I.M. Vieira, C.S. Gama and D.C.C. Vieira, 2 females (IEPA 1370) .— Municipality of Santana: lake in Santana Island (00°04’53.63”S, 51°09’39.14”W), 21.ii.2012, colls. A.G. Santiago and E.O. Galeno, 21 females with eggs and 63 specimens (IEPA 1558) ; at the same location as the previous collection, 7 females with eggs and 17 specimens (IEPA 1566), Amapá Grande River, Cachoeira Grande, small stream downstream of the waterfall, 26/08/1992, colls. C. Magalhães and Roberval (INPA-CRU 001082) (Figure 1).

Geographic distribution. Suriname, French Guyana, Guyana and Brazil (states of Amapá, Amazonas, Roraima and Pará) (Magalhães 2016; Melo 2003; Pachelle & Tavares 2018; Pimentel & Magalhães 2014; Tiefenbacher 1978; Vieira 2003).

Distribution in Amapá state. Basins form rivers Curiaú, Igarapé Fortaleza, Araguari and Lago Novo.

Previous records. Vieira (2003); Pachelle & Tavares (2018); Pimentel & Magalhães (2014) and Santos et al. (2018).

Ecological notes. This specie is found in clear and underground waters, and in lower regions.

Remarks. The specimens analyzed in this study correspond to the descriptions of (Melo 2003; Pachelle & Tavares 2018; Santos et al. 2018).