Cephaloleia nubila is a species of beetle of the family Chrysomelidae. It is found in Brazil and Ecuador.
Adults reach a length of about 6.5âÂÂ7 mm. Adults are black with a submedial pronotal macula, and the elytron with a wide yellowish submedial transverse vitta. The antennae are dark, with the last three antennomeres yellowish.