Sternotomis ducalis is a species of beetle belonging to the family Cerambycidae.
Sternotomis ducalis can reach a body length of 28-. Head and pronotum are mainly black, while the surface of the elytra varies from yellowish-greenish to reddish. Femora and tibiae are usually black. Antennae are black and longer than the insect.
This species can be found in Gambia, São Tomé and Príncipe, Senegal.