Sceloenopla pretiosa is a species of beetle of the family Chrysomelidae. It is found in Argentina, Brazil (Bahia, Rio de Janeiro, São Paulo) and Paraguay.
Adults are elongate, subdepressed and pale fulvous, with three longitudinal stripes on the thorax and the elytra metallic purple, the latter armed at the posterior angles with a large, flattened, very acute spine. Each elytron has eight irregular pale fulvous spots, confluent and covering nearly the whole surface.
The recorded host plants for this species are Philodendron species (including Philodendron selloum), Esembeckia febrifuga and Anthurium species.