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 Mayrinia curvidens ( Mayr, 1864 ) ( Figs 82–84 ) Loxa curvidens Mayr, 1864: 909 . Mayrinia curvidens : Pirán, 1956: 30 ; Grazia-Vieira, 1972: 119–121 . Material studied. Derrubadas : 1♀ , Parque Estadual do Turvo , Trilha Salto Yucumá , 19.IV.2004 , J. L. C. Bernardes leg. ( UFRG ) ; 1♂ , Parque Estadual do Turvo , 17.IV.2004 , J. L. C. Bernardes leg. ( UFRG ) . Maquiné : 1♂ , Forqueta , varredura, 16.IX.2006 , A. Ferrari leg., J. Grazia det. 2006, LES–936 ( UFRG ) ; 2♀ , Sítio da Amizade , inspeção visual, 27.V.2006 , A. Ferrari & L. M. Weiler leg., J. Grazia det. 2006, LES–930, 932 ( UFRG ) . São Francisco de Paula : 1♀ , Floresta Nacional de São Francisco de Paula , Trilha 1, Varredura , 09.VI.2006 , A. Frey da Silva leg., J. Grazia det. 2006 ( UFRG ) . Diagnostic features. Body dorsal and ventral surfaces green ( Fig. 82 ), antennae reddish. Mandibular plates longer than clypeus. Anterolateral margins of pronotum concave and with spaced denticles. Humeral angles slightly developed, acute apically and anteriorly directed, black ( Fig. 83 ). Each corium with one pale calosity. Connexivum concealed and immaculate. Body length: 11.00–14.00 mm ( Garbelotto & Campos 2014 ). FIGURES 82–84. Mayrinia curvidens . 82: Dorsal view, scale bar = 1.0 mm. 83: Head and pronotum. 84: Distribution within Rio Grande do Sul. Recorded host plants. Rice ( Lopes et al. 1974 ; Link & Grazia 1987 ) and soybean ( Costa & Link 1974 ; Lopes et al. 1974 ; Link & Grazia 1987 ). Distribution in Rio Grande do Sul . Derrubadas, Maquiné, Pelotas, Porto Alegre, Santa Maria, São Francisco de Paula, São Leopoldo and São Sepé ( Fig. 84 ). New records. Derrubadas, Maquiné and São Francisco de Paula.