Hydaticus ricinus, is a species of predaceous diving beetle found in India, Afghanistan, Bhutan, Myanmar, Nepal, Pakistan, Sri Lanka, China, Laos, Thailand, and Vietnam.

[1][2][3] Male is about 9.5 mm long.

[4] Suture between the metepisternum and metasternal wings is straight.

Apical spurs of the hind tibiae are simple, and pointed.

This Dytiscidae-related article is a stub.