Maechidius nepenthephilus is a species of beetle of the family Scarabaeidae. It is found in Indonesia (Irian Jaya), where it occurs on nutrient-poor semidry slopes in eucalypt stands at altitudes around 150 meters.
Adults reach a length of about 6.70âÂÂ7.70 mm. The dorsum is uniformly black-brown, while the labroclypeus, antennae, legs and venter are brown.
Adults have been found on the flowers of Nepenthes species.
The species name is derived from a combination of Nepenthes and Greek philia (Ancient Greek for love and friendship), indicating the association of the imago with flowers of pitcher plants.