A semi-terrestrial eumonostiliferous hoplonemertean species was discovered on the northeastern coast of the Bay of Bengal, India. Histological studies confirmed its affiliation with the genus Prosadenoporus Bürger, 1890. In this paper, it is described as a new species, Prosadenoporus indicus sp. nov. This species is distinguished from its congeners by a distinct black patch on the antero-dorsal surface of the head, a large body size, 16–18 proboscis nerves, a large frontal organ, the presence of neurochord cell, and exclusively circular muscles surrounding the rhynchodeum. A maximum-likelihood analysis of 658-bp cytochrome c oxidase subunit I (COI) gene sequences, including data from this species and five congeners available in public databases, supported the generic placement of the new species. The new species exhibited 10.3–11.1% uncorrected p-distance differences in 658-bp COI sequences compared to its congeners.