1 Elytra predominantly dark with humeral yellow macula or stripe reaching epipleura laterally. Figs 1–9. Brazil (Pará, Rondônia). C. pojuca (Martins & Galileo, 2001)

– Elytra predominantly yellow or orange with two or three isolated dark areas................................................ 2

2 Dorsal surface of elytra with dark area restricted to a single continuous stripe along the suture, reaching apex or at least the apical eight..................................... 3

– Dorsal surface of elytra with two isolated dark patches................................................................................... 4

3 Head, prothorax and ventral side of body pale brown; pronotum densely and uniformly punctate; lateral tubercles of prothorax distinctly acute at apex; dark stripes on dorsal surface of elytra and along epipleural margin reaching apex. Figs 10–17. Panama (Panamá)............... C. turnbowi (Hovore & Santos-Silva, 2007)

– Head, prothorax and ventral side of body violaceous with greenish reflections in some areas; pronotum sparsely punctate, punctures concentrated laterally, on anterior and posterior margins, and around the central gibbosity; lateral tubercles of prothorax rounded at apex; dark stripes on dorsal surface of elytra and close to epipleural margin not reaching apex. Figs 18–37. Ecuador (Napo)................................. C. erwini sp. nov.

4 Anterior black patch on dorsal surface of elytra elongate-triangular, with its widest area situated at base. Fig. 38. Peru (Pasco, Junín)......................................................................................... C. santossilvai Audureau, 2014

– Anterior black patch on dorsal surface of elytra rounded or ovoid, with its anterior area narrow and gradually widened (often the widening is rounded)............ 5

5 Sides of elytra lacking dark stripe close to the epipleural margin. Figs 39–42. Bolivia (La Paz)................................................. C. soledari (Martins & Galileo, 2001)

– Sides of elytra with dark stripe close to epipleural margin. Figs 43–62. Peru (Junín), Bolivia (Cochabamba)................................................. C. argodi (Belon, 1896)