The Canthophorus dubius shieldbug, which has an oval, black or dark blue, sometimes metallic green or bright violet appearance, and can reach a length of 68 millimeters (0.240.31 inch) and a width of 3.54.5 millimeters (0.140.18 inch), inhabits grasslands and open dry-warm areas, in particular lime or sand-marshes.
The body of these shieldbugs is oval, black or dark blue, sometimes metallic green or bright violet. Canthophorus dubius can reach a length of 68 millimetres (0.240.31 in) and a width of 3.54.5 millimetres (0.140.18 in). These burrowing bugs inhabit grasslands and open dry-warm areas, in particular lime or sand-marshes. 
