Chinavia erythrocnemis ( Berg, 1878 )

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 : 443

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.

Figures

FIGURES 30–33. Chinavia erythrocnemis. 30: Dorsal view, scale bar = 1.0 mm. 31: Head and anterior margin of pronotum. 32: Ventral view of thorax and abdomen, showing legs, spiracles and pseudosutures (red arrow). 33: Distribution within Rio Grande do Sul.