Plectris densehirsuta is a species of beetle of the family Scarabaeidae. It is found in Uruguay.
Adults reach a length of about 11âÂÂ12 mm. They are brown and dull. The entire upper and lower surfaces as well as the clypeus (which is only sparsely and thinly pubescent) are very densely and quite finely pubescent. The pubescence on the pronotum and scutellum is even denser than on the elytra and the pubescence on the thorax is very long, dense and woolly.