Planet of Origin: Arcturus IV, a heavily populated planet with 7 moons which orbits the K star Arcturus, 37 light years from Earth.
The Arcturians are a humanoid species who developed a militaristic civilisation who achieved space travel and where individuals reproduce by cloning. They were members of the same space federation as Earth in the 2270ies. They have reddish-gray skin, which formed heavy folds on their face and forehead and large.
Source: Star Trek universe, (Star Trek: The Motion Picture) The Arcturians were designed by Fred Phillips and Robert Fletcher for The Motion Picture.