Maechidius deltouri is a species of beetle of the family Scarabaeidae. It is found in Indonesia (Sulawesi), where it occurs in lowland rainforests.
Adults reach a length of about 8.45 mm. The dorsum is uniformly brown, while the labroclypeus, mouthparts, legs and venter are castaneous.
The species is named after GaÃÂtan Deltour to commemorate his efforts in the conservation of Sulawesi biodiversity.