Trochalus wauanus is a species of beetle of the family Scarabaeidae. It is found in Sudan.
Adults reach a length of about 8.5âÂÂ9 mm. They are similar to Trochalus peramihoanus. They are dull, bronze-black above and glossy, blackish-brown below. The legs are brown. The head is more densely punctate than in peramihoanus and the pronotum is somewhat longer and the posterior angles are less rounded.