Citharomangelia boakei is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
The length of the shell attains 12 mm.
The shell closely resembles Citharomangelia africana <small>(G. B. Sowerby III, 1903)</small>, but it is smaller and with more evenly convex whorls. Furthermore, the 11 â 12 axial ribs are not arcuate below the suture. The spire is higher than in Citharomangelia richardi <small>(Crosse, 1869)</small>. The fine spiral striae are distinct. The columella shows traces of transverse plicae. The outer lip is denticulate with 13 denticles.
The whorls are narrowly round-shouldered at the top. The longitudinal plicae are close, small, rather straight. There are no revolving striae. The color is pinkish white, shining, with a subsutural interrupted chestnut band, and another about the top of the aperture. The lower half of the body whorl is pale chestnut. The interior is two-banded with chestnut. The outer lip is thickened, internally minutely crenulated.
This marine species occurs off Sri Lanka.