Nezara nigridorsata Breddin, 1901: 123

Acrosterum bellum Rolston, 1983: 110–111 (synonymyzed by Schwertner and Grazia 2007.)

Coloration. Predominantly green. Dorsal region, under the wings with black coloration. The lateral margins of juga and pronotum are yellow, followed by a red band. Scutellum with five irregular yellow dots on the basis. Connexivum and urosternites red. Black macula in posterolateral angle of connexivum and urosternite. Head. Margins of juga with a slight concavity in front of eyes, apex of head broadened and semicircular. Proportion of antennal segments: I<II≈III<IV>V. The rostrum reaches the metacoxae. Proportion of rostral segments: I<II>III>IV. Thorax. Humeral angles produced laterad, sometimes developed into a spine. Anterolateral margins of pronotum with a submarginal dorsal depression. Hemelytra with costal angles slighty obtuse. Membranal suture convex. Abdomen. Medial spine of the third urosternite doesn’t reach the metacoxae. Spiracles black surrounded by a yellow callus.

Distribution. Brazil (PB, MG, SP, PR, SC*, RS), Argentina (FR**, CH, CR, SF, CB, BA), Uruguay.

Families of plants as possible hosts. Aizoaceae (Link & Grazia 1987, Schwertner & Grazia 2007), Compositae (Schwertner & Grazia 2007), Cruciferae (Schwertner & Grazia 2007), Brassicaceae (Link & Grazia 1987), Fabaceae (Link & Grazia 1987, Schwertner & Grazia 2007), Linaceae (Schwertner & Grazia 2007), Malvaceae (Link & Grazia 1987, Schwertner & Grazia 2007), Poaceae (Link & Grazia 1987, Schwertner & Grazia 2007), Solanaceae (Link & Grazia 1987, Schwertner & Grazia 2007).

Comments. It is usually confused with C. armigera because it may have the humeral angle developed into a spine. It can be distinguished by the colored bands with red color, by the apex of the head narrower and by the dorsal region, under the wings with black coloration.

*Records in Santa Catarina: Garbelotto and Campos 2015

**Records in Formosa from Dellapé et al. 2015