Mecistocephalus marcusensis is a species of centipede in the Mecistocephalidae family. It was described in 1953 by Japanese myriapodologist Yasunori Miyoshi.[1]
This species has 49 pairs of legs and can reach about 26 mm in length.
The species occurs on Minamitorishima, also known as Marcus Island, a small and isolated Japanese atoll in the north-western Pacific Ocean.[1]