Thyanta (Argosoma) humilis Bergroth, 1891

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 : 466-467

Thyanta (Argosoma) humilis Bergroth, 1891

( Figs 104–106 )

Pentatoma patruelis Stål, 1859: 226 . Preoccupied.

Thyanta patruelis Berg, 1878: 23 ; Torre-Bueno 1915: 161.

Thyanta (Argosoma) humilis Bergroth, 1891: 225 .

Thyanta (Argosoma) patruelis Rider & Chapin, 1991: 37 .

Material studied. Maquiné: 1♀, Garapiá-varredura, 21.XII. 2006, R. C. Bins-Neto & L. M. Weiler, LES–926; 1♀, Trilha 5, guarda-chuva, 03.IV.2006, J. L. C. Bernardes leg., LES –925, J. Grazia det. 2006 ( UFRG) ; 1♀, Trilha 4, 02.IV.2006, J. L. C. Bernardes leg., LES–922, J. Grazia det. 2006 ( UFRG) . Santa Maria: 1♀, 26.IV.1987, D. Link leg., “Erva de bicho” ( UFRG) .

Diagnostic features. Body dorsal and ventral surfaces green to castaneous. Red macule on dorsal median area of head and apex of scutellum ( Fig. 104 ). Mandibular plates subequal to clypeus and rounded apically ( Fig. 105 ). Pronotum with a red to purple transumeral band ( Fig. 104 ). Anterolateral margins of pronotum straight to slightly concave ( Figs 104–105 ). Humeral angles slightly developed, rounded apically ( Fig. 105 ). Body length: 7.50–9.50 mm ( Garbelotto & Campos 2014).

Recorded host plants. Canola (Marsaro Jr. et al. 2017; Bianchi et al. 2019).

Distribution in Rio Grande do Sul. Maquiné, Passo Fundo and Santa Maria ( Fig. 106 ).

New records. Maquiné and Santa Maria.

Figures

FIGURES 104–106. Thyanta (Argosoma) humilis. 104: Dorsal view, scale bar = 1.0 mm. 105: Head and pronotum. 106: Distribution within Rio Grande do Sul.