Pelocoris nigriculus Berg, 1879 Aquatic and semiaquatic Heteroptera (Insecta: Hemiptera) from Iberá Natural Reserve (Corrientes Province, Argentina) Mazzucconi, Silvia Ana Reyes, Cristina Armúa De Estévez, Ana Lía Zootaxa 2022 2022-03-01 5104 4 451 505 5K9LK Berg, 1879 Berg 1879 [151,680,1899,1926] Insecta Naucoridae Pelocoris Animalia Hemiptera 34 485 Arthropoda subSpecies binotulatus nigriculus    Pelocoris nigriculus Berg, 1879: Hemipt. Argentina, 188–189.  Material examined. Laguna Iberá RS: 2 ♀, Lobo Cuá Stream, 28°32’37.14’’S, 57°12’3.89’’W, 2.xii.2012; 1 ♀, Iberá Lagoon, sample 1, 2.xii.2012;  4 ♂, Baletón San Pedro,  3.xii.2012; 1 ♀, Fernández Lagoon, 11.xii.2014. San Nicolás RS: 1 ♂, marshland next to the barbecue area of the ranger station, 15.xii.2013; 1 ♀, marshland next to the house for the rangers, 15.xii.2013.  General distribution. Brazil, Bolivia, Argentina ( Moreira et al.2011b).   Habitat.  Pelocoris binotulatus nigriculushas been found in ponds, lagoons (with aquatic vegetation), marshlands (densely vegetated), streams and rivers ( Bachmann 1962c; Fontanarrosa et al.2004; López Ruf 2004; Melo & Nieser 2004; Torres et al.2007). At the INR, specimens were collected from the margins of the Iberá Lagoon in shallow waters with emergent and floating vegetation (Estévez et al.2003) and in Iberá in association with  Salvinia biloba,  Salvinia sp.,  Pontederia crassipes,  Nymphaea sp., and Lemnaceae( Poi de Neiff 2003; López Ruf 2004). During the present study, it was collected from unshaded margins with dense floating, emergent and submerged vegetation (mainly  P. crassipesand  S. biloba) in lentic habitats (Iberá Lagoon, Fernández Lagoon and marshlands), and lotic habitats (Lobo Cuá Stream) in standing or slow-moving water.   Remarks.The only published record from Colombia( Morales-Castaño & Molano-Rendón 2008) needs confirmation. 3697307453 [561,959,186,213] 2012-12-03 Baleton Saint Pierre and Miquelon San Pedro 35 486 4 4