Sternotomis ducalis is a species of beetle belonging to the family Cerambycidae.

Sternotomis ducalis can reach a body length of 28–34 millimetres (1.1–1.3 in).

Head and pronotum are mainly black, while the surface of the elytra varies from yellowish-greenish to reddish.

Antennae are black and longer than the insect.

This species can be found in Gambia, São Tomé and Príncipe, Senegal.