Ogmocotyle ailuri (Price, 1954) (Digenea: Notocotylidae) found in the Japanese monkey, Macaca fuscata.

Several dozens of small trematodes were found in the small intestine of a Japanese monkey, Macaca fuscata, that was captured in Sendai City, Miyagi Prefecture, Japan. The trematode was identified as Ogmocotyle ailuri. This is the first case of a Japanese monkey infected with Ogmocotyle trematodes, and a new host record for O. ailuri.