Biodiversity of the scentless plant bugs (Hemiptera: Rhopalidae) in southern South America Author Melo, M. C. División Entomología, Museo de La Plata, U. N. L. P., Paseo del Bosque s / nº (1900) La Plata, Buenos Aires, Argentina; & Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Author Montemayor, S. I. División Entomología, Museo de La Plata, U. N. L. P., Paseo del Bosque s / nº (1900) La Plata, Buenos Aires, Argentina; & Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) text Journal of Natural History 2015 2015-07-31 50 163 200 http://dx.doi.org/10.1080/00222933.2015.1073810 journal article 21295 10.1080/00222933.2015.1073810 d37ec798-2cd3-4f94-9a80-808ebf53beaa 1464-5262 3983256 Liorhyssus lineatoventris ( Spinola, 1852 ) lsid:Coreoidea.speciesfile.org:TaxonName:452335 Merocoris lineatoventris Spinola 1852: 168 – 170 ( Chile ) . Liorhyssus lineatoventris : Göllner-Scheiding 1976: 196 ( Chubut ) ; Pall and Coscarón 2012: 1457 ( Argentina ). Material examined ARGENTINA : Chubut : 3♂ , 1♀ , Valle Huenuco (?), X-[19]49 ( MLP ) ; Mendoza : 1♂ , Mendoza ( MLP ) ; Neuquén : 1♀ , XII-1922 , Koehler col . ( MLP ); 1♀ , San Martin de los Andes , 4-III-1942 , M . Birabén col . ( MLP ); Río Negro : 1♀ , Valcheta , 20-II-1941 , Birabén col . ( MLP ). Argentinean distribution Chubut, Mendoza *, Neuquén * and Río Negro *. Central and South American distribution Argentina , Chile , and Ecuador (doubtful) ( Göllner-Scheiding 1983 ). Tribe NIESTHREINI Chopra, 1967 Genus Arhyssus Stål, 1870 NEW COUNTRY RECORD lsid:Coreoidea.speciesfile.org:TaxonName:452430 Type species Coryzus bohemani Signoret, 1859 Arhyssus tricostatus ( Spinola, 1852 ) NEW COUNTRY RECORD lsid:Coreoidea.speciesfile.org:TaxonName:452122 Merocoris tricostatus Spinola 1852: 172 – 173 ( Chile : central provinces). Material examined ARGENTINA : Mendoza : 1♂ , Uspallata, 13-III-1940 , Dra . Chiarelli, Bosq coll . ( MLP ). Argentinean distribution Mendoza *. Central and South American distribution Chile ( Chopra 1968 ); Argentina *. Comments Most Arhyssus species occur in the Nearctic Region, where they are widely distributed. Only two species are known from the Neotropics: A. tricostatus and A. peruensis Chopra, 1968 from Peru , both of which belong to the tricostatus group ( Chopra 1968 ).