Pseudopalaemon chryseus Kensley & Walker, 1982

Examined material. Municipality of Macapá: Maruanum River,ripary vegetation(00°11’30.67”N, 51°17’05.65”W), 3.iv.2002, cols. I.M. Vieira and O.M. Costa, 1 female and 1 female with eggs (IEPA 321) ; Environmental Protection Area of the Curiaú River (APA do Rio Curiaú), Curralinho (00°07’26.74”N, 51°06’50.18”W), 08.vi.2002, cols. I.M. Vieira, O.A. Alencar and O.M. Costa, 1 male and 2 females (IEPA335) ; Curralinho, in aquatic macrophytes (00°07’26.74”N, 51°06’50.18”W), 22.ii.2002, cols. I.M. Vieira, O.A. Alencar and O.M. Costa, 9 males and 22 females (IEPA345) ; idem, Curiaú River (00°08’43.2”N, 51°02’31.9”W), 25.ii.2002, cols. O.A. Alencar, D. Filocreão and O.T. Arnaud, 1 male and 1 female (IEPA368) ; idem (00°08’43.2”N, 51°02’31.9”W), 19.viii.2002, cols. O.A. Alencar, D. Filocreão and O.T. Arnaud, 2 males and 3 females (IEPA369); idem (00°08’48.2”N, 51°02’27.4”W), 26.vii.2002, cols. O.A. Alencar, D. Filocreão and O.T. Arnaud, 3 males and 8 females (IEPA381); idem (00°08’48.2”N, 51°02’27.4”W), 3 males (IEPA415); idem (00°08’48.2”N, 51°02’27.4”W), 26.vii.2002, colls. O.A. Alencar, D. Filocreão and O.T. Arnaud, 1 female with eggs (IEPA419); balneary of the APA of the Curiaú River (00°08’43.83”N, 51°02’31.44”W), 31.viii.2002, colls. I.M. Vieira, 2 females (IEPA464) ; APA do Rio Curiaú (00°08’44.16”N, 51°02’32.77”W), 25.ix.2002, colls. I.M. Vieira, O.A. Alencar and O.M. Costa, 1 males (IEPA 475) ;— Municipality of Macapá: Stream of Amapá Florestal and Celulose S.A (AMCEL) , savana (00°15’29”N, 51°03’39”W), 7 specimens (IEPA770) . Municipality of Porto Grande: stream near to embankment, in area of plantation of Amapá Florestal e Celulose S.A, savana (00°15’29”N, 51°03’39”W), 5.vi.2002, cols. I.M. Vieira, O.A. Alencar and O.M. Costa, 3 males and 4 females (IEPA 340) ; dam in area 36 of AMCEL, savana (00°28’60”N, 51°04’59”W), 06.vi.2002, cols. I.M. Vieira, O.A. Alencar and O.M. Costa, 1 male and 1 female (IEPA350); idem (00°28’60”N, 51°04’59”W), 1 female (IEPA 634) .— Municipality of Porto Grande: Pedreira River with the BR156 (00°42’13”N, 51°21’59”W), 07.VI.2002, col. I.M. Vieira, 35 males, 43 females and 21 females with eggs (IEPA826) .— Municipality of Laranjal do Jari: Sustainable Development Reserve of Iratapuru River, Jari River (00°16’35.21”N, 53°06’24.48”W), 11.xi.2004, col. I.M. Vieira, 4 males and 6 females (IEPA568) . Municipality of Pedra Branca: Sustainable Development Reserve of Iratapuru River, Cupixi River (00°35’07”N, 52°02’01.07”W), 2.viii.2005, cols. I.M. Vieira and D.C.C. Vieira, 1 juvenile (IEPA 915) ; National Park of Tumucumaque Mountains, streams that are tributaries of Anacuí River (01°50’41,29”N, 52°44’28.65”W), 9.iii.2006, cols. I.M. Vieira and D.C.C. Vieira, 9 males, 1 females and 2 females with eggs (IEPA 1159) . Municipality of Laranjal do Jari: left bank of the Jari River (00°45’18.55”S, 52°30’13.16”W), 8.iv.2008, I.M. Vieira and D.C.C. Vieira, 3 specimens (IEPA 1369) ; island on the right margin of the Jari River, (00°47’54,85”S, 52°31’49,65”W), 4.xii.2009, I.M. Vieira and E.F. Araújo, 31 specimens (IEPA 1380) roda Macapá, Stream Parana, no information, 20.vii.1991, (INPA-CRU 001215) (Figure 1).

Geographic distribution. Brazil (states of Amapá, Amazonas and Pará) and Colombia (Magalhães & Pereira 2007; Pileggi et al. 2013; Pimentel & Magalhães 2014; Valencia & Campos 2010 a; Vieira 2003, 2008).

Distribution in Amapá state. Maruanum River, Curiaú River, Curralinho, stream of ripary florest in savanas regions, Pedreira River Jari River, Cupixi River and Anacuí River.

Previous records. Pileggi et al. (2013); Pimentel & Magalhães (2014); Vieira (2003, 2008).

Ecological notes. Species found in aquatic macrophytes, and in streams of clear, transparent water.

Remarks. The specimens found here are morphologically similar to descriptions of Kensley & Walker (1982); Melo (2003) and Pimentel & Magalhães (2014).