Semiaquatic bugs (Insecta, Heteroptera, Gerromorpha) from Vale do Ribeira, São Paulo state, Brazil Magalhães, Oséias Martins Nery, Leticia Moller, Hermann Pavarini, Ronaldo Bertini, Giovana Moreira, Felipe Ferraz Figueiredo Check List 2020 2020-04-03 16 2 349 359 4RZHH Gould, 1931 Gould 1931 [813,1174,1759,1784] Insecta Veliidae Rhagovelia Animalia Hemiptera 4 353 Arthropoda species robusta   Figures 8, 9  New records.  BRAZIL• 1 ♀; SãoPaulo, ValedoRibeira, Sete Barras, station 1; 24°17′31″S, 048°06′29″W;  7 Mar. 2013; G. Bertiniet al. leg.; CEIOC 74811•  1 ♀; São Paulo, Vale do Ribeira, Sete Barras, station 4; 24°18′11″S, 048°06′09″W;  7 Jan. 2013; G. Bertiniet al. leg.; CEIOC 81510•  1 ♀; São Paulo, Vale do Ribeira, Sete Barras, station 4; 24°18′11″S, 048°06′09″W;  7 Feb. 2013; G. Ber- tini et al. leg.; CEIOC 74836•  1 ♀; São Paulo, Valedo   Ribeira, Sete Barras, station 4; 24°18′11″S, 048°06′09″W;  7 Mar. 2013; G. Bertiniet al. leg.; CEIOC 74835•  2 ♂♂; São Paulo, Vale do Ribeira, Sete Barras, station 4; 24°18′11″S, 048°06′09″W;  8 Feb. 2013; G. Bertiniet al. leg.; CEIOC 74841.   Identification.Like  R. plaumanni,  R. robustabelongs tothe  robustagroup of species ( Polhemus 1997; Moreira et al. 2012). Their males can be readily distinguished by the presence of a large preapical spine on the hind tibia of the latter, which is absent on the former. Additionally, the males of  R. robustawere identified based on the pronotum mostly blackish, strongly contrasting with a yellowish brown mark on anterior lobe, jugum and proepisternum with minute black denticles, hind trochanter with spines, hind femur with three irregular rows of spines, with a large spine near its middle dorsally displaced from the others, and sides of abdominal segment VII without patches of black denticles ( Magalhães et al. 2016). The females above were identified by association with the males available from the study area and comparison with other females of  R. robustafrom São Paulo statedeposited in the CEIOC.  Known distribution. Argentina, Brazil, Paraguay( Magalhães et al 2016).   Distribution in Brazil. Espírito Santo( Moreira et al. 2010), Goiás( Polhemus 1997), Mato Grosso( Dias-Silva et al. 2013; Giehl et al. 2018), Minas Gerais( Polhemus 1997; Nieser and Melo 1997; Souza et al. 2006; Taylor and Ferreira 2012; Moreira and Barbosa 2012), Pará( Moreira and Campos 2012), Rio de Janeiro( Moreira and Ribeiro 2009), Santa Catarina( Polhemus 1997), São Paulo(Moreira and Barbosa 2011; Castanhole et al. 2013; this work), Sergipe( Moreira and Campos 2012). 2013-03-07 CEIOC G. Bertini Brazil SaoPaulo -24.291945 Sete Barras 21 -48.108055 ValedoRibeira 4 353 CEIOC 74811 1 1 2013-01-07 CEIOC G. Bertini Brazil -24.303055 Sete Barras 21 -48.102497 Vale do Ribeira 4 353 CEIOC 81510 1 1 Sao Paulo 2013-02-07 CEIOC Brazil -24.303055 Sete Barras 21 -48.102497 Vale do Ribeira 4 353 CEIOC 74836 1 1 Sao Paulo [1155,1420,2067,2091] Vale Brazil Sao Paulo 4 353 1 1 Sao Paulo 2013-03-07 CEIOC G. Bertini -24.303055 Sete Barras 21 -48.102497 Ribeira 5 354 CEIOC 74835 1 2013-02-08 CEIOC G. Bertini -24.303055 Sete Barras 21 -48.102497 Vale do Ribeira 5 354 CEIOC 74841 2 2 Sao Paulo