An Iowa man was arrested this month for his role in a group that created and shared so-called animal crush videos in which monkeys were brutally tortured, sexually abused and killed in sadistic ways, federal prosecutors said on Friday.

The man, Philip Colt Moss, 41, who was arrested on Aug. 8, was charged in U.S. District Court in Cincinnati with conspiracy to create and distribute the videos and with distributing the videos themselves, according to the indictment, which was unsealed on Friday.

Also named in the indictment against Mr. Moss are Nicholas T. Dryden, of Ohio, and Giancarlo Morelli, of New Jersey, who were charged in June with the same counts as Mr. Moss.

Mr. Dryden, who prosecutors said had paid a minor in Indonesia to film…