Illustrated guide to Pentatominae (Hemiptera: Pentatomidae) species associated with the four main grain crops in Rio Grande do Sul state, Brazil Author Barros, Lurdiana D. Laboratory of Systematic Entomology, Department of Zoology, Institute of Biosciences, Universidade Federal do Rio Grande do Sul (UFRGS). Av. Bento Gonçalves 9500, CEP 91509 - 900, Porto Alegre, RS, Brazil. Author Paim, Marcelo R. 0000-0003-2387-933X Laboratory of Systematic Entomology, Department of Zoology, Institute of Biosciences, Universidade Federal do Rio Grande do Sul (UFRGS). Av. Bento Gonçalves 9500, CEP 91509 - 900, Porto Alegre, RS, Brazil. & marceloreginatop @ gmail. com; https: // orcid. org / 0000 - 0003 - 2387 - 933 X marceloreginatop@gmail.com Author Krein, Verônica 0000-0001-8106-2411 Laboratory of Systematic Entomology, Department of Zoology, Institute of Biosciences, Universidade Federal do Rio Grande do Sul (UFRGS). Av. Bento Gonçalves 9500, CEP 91509 - 900, Porto Alegre, RS, Brazil. & vero. krein @ hotmail. com; https: // orcid. org / 0000 - 0001 - 8106 - 2411 vero.krein@hotmail.com Author Carabajal, Victor 0000-0001-6794-1022 Laboratory of Systematic Entomology, Department of Zoology, Institute of Biosciences, Universidade Federal do Rio Grande do Sul (UFRGS). Av. Bento Gonçalves 9500, CEP 91509 - 900, Porto Alegre, RS, Brazil. & victorqcarabajal @ gmail. com; https: // orcid. org / 0000 - 0001 - 6794 - 1022 victorqcarabajal@gmail.com Author Brandão, Marcela N. 0000-0002-2918-788X Laboratory of Systematic Entomology, Department of Zoology, Institute of Biosciences, Universidade Federal do Rio Grande do Sul (UFRGS). Av. Bento Gonçalves 9500, CEP 91509 - 900, Porto Alegre, RS, Brazil. & marcela. n. brandao @ gmail. com; https: // orcid. org / 0000 - 0002 - 2918 - 788 X marcela.n.brandao@gmail.com Author Bernardes, Paula De O. 0000-0001-8841-335X Laboratory of Systematic Entomology, Department of Zoology, Institute of Biosciences, Universidade Federal do Rio Grande do Sul (UFRGS). Av. Bento Gonçalves 9500, CEP 91509 - 900, Porto Alegre, RS, Brazil. & paulabernardes 1616 @ gmail. com; https: // orcid. org / 0000 - 0001 - 8841 - 335 X paulabernardes1616@gmail.com Author Lindner, Mariana F. 0000-0002-4879-8221 Laboratory of Systematic Entomology, Department of Zoology, Institute of Biosciences, Universidade Federal do Rio Grande do Sul (UFRGS). Av. Bento Gonçalves 9500, CEP 91509 - 900, Porto Alegre, RS, Brazil. & mflindner @ hotmail. com; https: // orcid. org / 0000 - 0002 - 4879 - 8221 mflindner@hotmail.com text Zootaxa 2021 2021-04-14 4958 1 430 478 journal article 7221 10.11646/zootaxa.4958.1.27 7336298c-86ce-40e7-bab5-e75b0eddfdaa 1175-5326 4692176 303D300E-C17B-407C-A63B-53F906C5D825 Chinavia obstinata ( Stål, 1860 ) ( Figs 44–46 ) Rhaphigaster obstinatus Stål, 1860: 23 ; Walker, 1867: 360 . Acrosternum ( Chinavia ) panizzii Frey-da-Silva & Grazia, 2001: 113 , 115–117 (Syn. by Schwertner & Grazia, 2007 ). Acrosternum obstinatum : Matesco et al. 2003: 82–88 . Chinavia obstinata : Schwertner & Grazia, 2006: 243 ; 2007: 430–431; Genevcius et al . 2012: 26–27 ; Campos et al . 2012 , figs 2–3; Fürstenau et al . 2013: 74–78 (key); Bianchi et al . 2019 ; Servino & Schwertner, 2020 (electronic key). Material studied. Pelotas : 1♂ , 1♀ , 20.III.2001 , L. M. Vivian leg. ( UFRG ) . Porto Alegre : 1♂ , II.1995 , J. A. M. Fernandes leg. ( UFRG ) . Rio Grande : 1♂ , Estação Ecológica do Taim , 17.III.1982 , J. Grazia leg. ( UFRG ) . Diagnostic features. Body oval, light to dark green. Cicatrices of pronotum, basal angles of scutellum and connexivum immaculate ( Fig. 44 ), but the latter may bear black spots at the posterolateral angles. Abdominal spine surpassing mesocoxae ( Fig. 45 , red arrow). Spiracles pale or dark. Body length: 11.00–15.00 mm ( Schwertner & Grazia 2007 ; Campos et al . 2012 ; Garbelotto & Campos 2014 ). FIGURES 44–46. Chinavia obstinata . 44: Dorsal view, scale bar = 1.0 mm. 45: Ventral view, abdominal spine (red arrow). 49: Distribution within Rio Grande do Sul. Recorded host plants. Canola (Marsaro Jr. et al . 2017; Bianchi et al . 2019 ) and soybean ( Garbelotto & Campos 2014 ). Distribution in Rio Grande do Sul . Estrela, Pelotas, Porto Alegre, Passo Fundo, Rio Grande and Viamão ( Fig. 46 ).