Piezodorus guildinii (Westwood, 1837)

(Figs 100–103)

Rhaphigaster guildinii Westwood, 1837: 31 .

Piezodorus guildinii: Uhler, 1894 .

Material studied. Cruz Alta: 1♂, 14.X.1981, Link & Costa leg., Linho, J. Grazia det. 1986 (UFRG) ; 1♂, Fecotrigo, M. T. B. da Silva leg. (UFRG) . Júlio de Castilhos: 1♀, 14.X.1981, Link & Costa leg., Tremoço, J. Grazia det. 1986 (UFRG) . Santa Maria: 1♂, XI.1981, D. Link leg., Linho, J. Grazia det. 1986 (UFRG) ; 1♂, Tremoço Amarelo, J. Grazia det. 1986 (UFRG) .

Diagnostic features. Body dorsal and ventral surfaces green to yellow (Fig. 100). Mandibular plates subequal to clypeus and rounded apically. Pronotum with a red stripe at posterior third (Fig. 102). Anterolateral margins of pronotum straight. Humeral angles not developed (Fig. 102). Abdominal spine reaching the mesocoxae (Fig. 101, red arrow), sometimes extended to the head. Body length: 8.00–9.00 mm (Garbelotto & Campos 2014).

Recorded host plants. Canola (Marsaro Jr. et al. 2017; Bianchi et al. 2019) and soybean (Costa & Link 1974; Link & Grazia 1987; Panizzi 2008b; Medeiros & Megier 2009).

Distribution in Rio Grande do Sul. Cruz Alta, Júlio de Castilhos, Passo Fundo, Santa Maria and São Sepé (Fig. 103).

New records. Cruz Alta and Júlio de Castilhos.