Piezodorus guildinii ( Westwood, 1837 )

Barros, Lurdiana D., Paim, Marcelo R., Krein, Verônica, Carabajal, Victor, Brandão, Marcela N., Bernardes, Paula De O. & Lindner, Mariana F., 2021, Illustrated guide to Pentatominae (Hemiptera: Pentatomidae) species associated with the four main grain crops in Rio Grande do Sul state, Brazil, Zootaxa 4958 (1), pp. 430-478 : 465-466

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.

Figures

FIGURES 100–103. Piezodorus guildinii. 100: Dorsal view, scale bar = 1.0 mm. 101: Ventral view, showing abdominal spine (arrow). 102: Head and pronotum. 103: Distribution within Rio Grande do Sul.