Onitis kethai is a species of dung beetle in the family Scarabaeidae. It is only known from its type locality Biligiri Rangaswamy temple Tiger Reserve in Karnataka state of India.
Onitis kethai measures 11.5âÂÂ15 mm in length and 6âÂÂ7.5 mm in breadth.
The species was named in memory of the late field assistant Ketha Gowda, who helped the team in sampling beetles and other insects.