Maechidius weigeli is a species of beetle of the family Scarabaeidae. It is found in Papua New Guinea and Indonesia (Irian Jaya), where it occurs in lower montane rainforests at about 1150 meters altitude.
Adults reach a length of about 5.80âÂÂ6.60 mm. They have the general features of the pauxillus species group. The dorsal surface is opaque, except on the anterior margin of the labroclypeus.
The species is named after Andreas Weigel, a famous expert on old-world Cerambycidae.