Aquatic and semiaquatic Heteroptera (Insecta: Hemiptera) from Iberá Natural Reserve (Corrientes Province, Argentina) Author Mazzucconi, Silvia Ana Laboratorio de Entomología, IBBEA, CONICET-UBA., DBBE-FCEN, Universidad de Buenos Aires, Buenos Aires, Argentina. Departamento de Biología, Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, Corrientes, Argentina. acarmua @ hotmail. com; https: // orcid. org / 0000 - 0002 - 1686 - 6381 Author Reyes, Cristina Armúa De 0000-0002-1686-6381 acarmua@hotmail.com Author Estévez, Ana Lía División Entomología, Museo de La Plata, La Plata, Buenos Aires, Argentina. text Zootaxa 2022 2022-03-01 5104 4 451 505 journal article 20385 10.11646/zootaxa.5104.4.1 fa7c1cbd-e54d-4f7f-a592-94d68743de77 1175-5326 6332126 D2B6F489-D907-4AC7-9C09-8464DF56BCED Rheumatobates crassifemur crassifemur Esaki, 1926 Rheumatobates crassifemur Esaki, 1926 : Ann. Mus. Nation. Hungar., 149–153. Material examined. Galarza RS: 2 ♂ , 3 ♀ , overflow channel in Hermanos Fleita field, 18.iv.2013 . General distribution. Panama , Colombia , Brazil , Bolivia , Paraguay , Argentina ( Moreira et al. 2011b ). Habitat. This species has been found in slow to moderately fast-flowing streams with or without aquatic vegetation, rivers, ponds, lagoons and lakes ( Hungerford 1954 ; Mazzucconi & Bachmann 1995 ; Aristizábal-García 2002 ; Souza et al. 2006 ; Molano-Rendón et al. 2008 ; Moreira et al. 2011c ; Dias-Silva et al. 2013 ). Rheumatobates c. crassifemur has also been collected on quiet brackish waters of pools at the mouth of streams emptying into the sea in Panama ( Drake & Hottes 1951 ). At the INR, this species was collected from the margins of overflow channels with dense emergent and submerged vegetation. Remarks. This is the first record of R. c. crassifemur from INR. This species was previously recorded from Corrientes Province by Bachmann (1966b) , Mazzucconi & Bachmann (1995) , and Mazzucconi (1999) .