Chinavia erythrocnemis (Berg, 1878)

(Figs 30–33)

Nezara erythrocnemis Berg, 1878: 27–28 .

Nezara (Acrosternum) erythrocnemis: Kirkaldy, 1909: 118 .

Acrosternum erythrocnemis: Pennington, 1920: 9 .

Acrosternum (Chinavia) erythrocnemis: Rolston, 1983: 161; Frey-da-Silva & Grazia, 2001: 112.

Chinavia erythrocnemis: Matesco et al., 2006: 483–488; Schwertner & Grazia, 2007: 426; Genevcius & Schwertner, 2014: 43–44; Fürstenau et al. 2013: 74–78 (key); Bianchi et al. 2019; Servino & Schwertner, 2020 (electronic key).

Material studied. Derrubadas: 1♀, Parque Estadual do Turvo, 1982, S. L. B. Bonatto leg. (UFRG) . Rio Grande: 1♀, Estação Ecológica do Taim, 1982, J. Grazia leg. (UFRG) ; 1♂, Estação Ecológica do Taim, 1981. J. Grazia leg. (UFRG) .

Diagnostic features. Body dorsal surface light green to dark green. Lateral margin of mandibular plates with a largely reddish band (Fig. 31). Anterolateral margins of pronotum yellowish (Figs 30, 31). Cicatrices of pronotum darker (Fig. 31, red arrow). Basal angles of scutellum dark (Fig. 30). Connexivum yellowish, with a black spot at anterior and posterior margins (Fig. 30). Abdominal spine reaching metacoxae. Spiracles pale, abdominal suture and pseudo-suture dark (Fig. 32). Body length: 11.00–14.00 mm (Schwertner & Grazia 2007).

Recorded host plants. Canola (Marsaro Jr. et al. 2017; Bianchi et al. 2019) and soybean (Schwertner & Grazia 2007).

Distribution in Rio Grande do Sul. Barra do Quaraí, Derrubadas, Planalto, Passo Fundo, Pelotas, Rio Grande and Uruguaiana (Fig. 33).

Comments. Species easily recognized by the general color pattern of the body.