A creature from Japanese folklore. If a mother died from giving birth and was not buried properly, she will turn into an Ubume and her baby will become an Ubu. A Ubu's appearance varies depending on where it lives. Thus the Ubu of Niigata prefecture and Sado Island have a spider like appearance. To escape them one must keep running, throw some garment such as a shoe behind you, and tell it that "it's your mother." This will make the Ubu to stop chasing someone.
"A spider-monster that appears on Sado Island of the Niigata prefecture. It appears while making noises like a baby's cry. Dead or abandoned babies sometimes transform into an Ubu. They grab onto passerby and kill them. If one grasps your leg, take off a shoe, throw it over your shoulder and yell, "This is your mother," and it will disappear."