Chinavia nigridorsata (Breddin, 1901)

(Figs 41–43)

Nezara nigridorsata Breddin, 1901: 123 .

Acrosternum armigera: Costa & Link, 1974: 398 .

Acrosternum (Chinavia) bellum Rolston, 1983: 110; Link & Grazia, 1987: 117.

Acrosternum bellum: Panizzi et al., 2000

Chinavia nigridorsata: Schwertner & Grazia, 2007: 430; Fürstenau et al. 2013: 74–78 (key); Bianchi et al. 2019; Servino & Schwertner, 2020 (electronic key).

Material studied. Cruz Alta: 1♀ 1♂, 19.X.1981, Link & Costa leg., “Colza” (UFRG) . Guaíba: 1♀, Estação Experimental Agronômica, XII.1982, G. Moreira leg. (UFRG) ; 1♀, 01.X.1985, Joá, Del Vecchio leg. (UFRG) . Rio Grande: 1♂, Estação Ecológica do Taim, 01.IV.1981, J. Grazia leg. (UFRG) .

Diagnostic features. Body green to light green (Fig. 41), lateral margins of mandibular plates, pronotum, hemelytra and connexivum reddish (Fig. 41). Cicatrices of pronotum and basal angles of scutellum immaculate (Fig. 42). Posterolateral angles of connexivum maculate (Fig. 41). Spiracles black surrounded by a yellow callus. Humeral angles produced into a spine (Figs 41–42). Body length: 11.00–13.00 mm (Schwertner & Grazia 2007; Garbelotto & Campos 2014).

Recorded host plants. Soybean and wheat (Lopes et al. 1974; Link & Grazia 1987), and Canola (Bianchi et al. 2019).

Distribution in Rio Grande do Sul. Cruz Alta, Guaíba, Rio Grande, Santa Maria and Passo Fundo (Fig. 43).

Comments. This species is similar to C. armigera, being differentiated by having the mandibular plates narrower and margins of body reddish instead of yellowish.

New records. Cruz Alta and Guaíba.