Stiliger is a genus of small and minute sacoglossan or sap-sucking sea slugs. They are marine gastropod mollusks in the family Limapontiidae.
They somewhat resemble nudibranchs, but are not closely related to them.
Aeolid-like in shape, the anterior surface of this sacoglossan is covered with cerata. The rhinophores are simple. The body is white to dirty-white with reddish brown spots. This species feeds on filamentous red algae, such as such as Polysiphonia and Callithamnion