Rhyzobius noctuabundus is a species of beetle of the family Coccinellidae. It is found in Australia (Western Australia, Northern Territory, South Australia, Victoria, New South Wales, Queensland).

Description Adults reach a length of about . They have an elongate oval, moderately convex, dark reddish brown body, with the elytra darker. On the dorsal surface, there are appresed setae and sparse darker bristles along margins. The pubescence forms a wavy pattern on the elytra.

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