The beetle is only 4mm long and has a head green with golden reflections. The wing case is 2.7mm wide, with reddish brown and gold reflections.
This species is distinguished from other Costa Rican species by the following combination of characters:
This species is 1 of 170 in the genus Canthidium. Canthidium beetles are restricted to the new world tropics, 25 species being known from Costa Rica.
It is thought to be the sister species of C. marianelae, based on shared morphological characters.