Cephaloleia gemma is a species of beetle of the family Chrysomelidae. It is found in Bolivia and Brazil (Matto Grosso, Rondonia).
Description Adults reach a length of about 4 mm. Adults are black, with the lateral margin of the pronotum paler. The elytron has a broad pale yellow vitta and a pale lateral margin. The legs are yellow.
Biology Adults have been collected off Calathea species.
Etymology The species name is derived from Latin gemma (meaning bud, eye or jewel) and refers to the large eyes and beautiful appearance of this species.
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