A new synonymy within theSouthAmerican Carpocorini (Hemiptera: Heteroptera Pentatomidae) Author Faúndez, Eduardo I. Instituto de la Patagonia, Universidad de Magallanes, Av. Bulnes, 01855 Punta Arenas, Chile. Author Rider, David A. Entomology Department, School of Natural Resource Sciences, North Dakota State University, Dept. 7650 P. O. Box 6050; Fargo, ND, USA. Author Carvajal, Mariom A. Instituto de la Patagonia, Universidad de Magallanes, Av. Bulnes, 01855 Punta Arenas, Chile. text Zootaxa 2021 2021-07-02 4996 1 199 200 journal article 10.11646/zootaxa.4996.1.13 1175-5326 5069371 Euschisthus bicallosus ( Pirán, 1959 ) = Graphorn bicornutus Faúndez, Rider & Carvajal, 2017 syn. nov. Additionally, the following new combination is proposed: