Rhyzobius alphabeticus is a species of beetle of the family Coccinellidae. It is found in Australia (Tasmania, Victoria, New South Wales).
Description Adults reach a length of about . They have an elongate oval, flattened body. The dorsum is mostly yellowish brown to dark brown, but the elytra are reddish or yellowish with a dark brown or black pattern. The ventral surface is dark brown with the legs light brown. The pubescence on the dorsum consists of appresed setae and darker stiff bristles.
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