Trichomaladera infortunata is a species of beetle of the family Scarabaeidae. It is found in Taiwan.
Adults reach a length of about 13.4âÂÂ14.5 mm. They have a dark to reddish brown, oblong body. The antennae are yellow and the dorsal surface (except for the shiny labroclypeus) is dull and densely covered with erect setae.