Rhyzobius papuensis is a species of beetle of the family Coccinellidae. It is found in Papua New Guinea.
Description Adults reach a length of about . They have a broadly oval, strongly convex body. The dorsal surface is brownish black or black with a blue metallic sheen on the elytra. The antennae are brown. The dorsum has moderately long and pubescence, forming a wavy pattern on the elytra.
Etymology The species name refers to country of its origin.
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