Cephaloleia crenulata is a species of beetle of the family Chrysomelidae. It is found in Ecuador.
Adults reach a length of about 3.9 mm. Adults are yellowish-brown, with antennomere 1 yellowish-brown, 2âÂÂ10 darker and 11 dark basally and paler apically.
The species name is derived from Latin crenulatum (meaning minutely emarginate) and refers to the finely emarginate lateral margin of the pronotum.