Chinavia nigridorsata (Breddin, 1901)

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 : 446

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.

Figures

FIGURES 41–43. Chinavia nigridorsata. 41: Dorsal view, scale bar = 1.0 mm. 42: Head and pronotum. 43: Distribution within Rio Grande do Sul.