Sphaerocoris annulus can reach a length of about 8 millimetres (0.31 in). The basic color is green, with eleven ring-shaped spots on the elytra. The colors and the design of these bugs represent a warning to predators. They also emit a noxious odour when disturbed. Main host plants are Gossypium species (Malvaceae), Coffea arabica (Rubiaceae), Citrus species (Rutaceae) and Vernonia amygdalina (Asteraceae). This species reproduces at the beginning of the dry season (November–December). The full development lasts 56 days.
