The Spider People are a tribe from the Lost Land.
They appear in the Turok: Dinosaur Hunter comics by Valiant. They are a vicious race of people led by a man that goes by the name of Chichak. When they were first introduced they were very hostile to Turok and tried to kill him, but later in the series' run Chichak assembles what remains of his tribes in the Lost Land to help Turok fight the Campaigner.
On a side note Chichak's name was used for the villain in the Turok: Son of Stone movie. It is unknown if this Chichak is one of the Spider people or not, but considering which Turok universe this takes place in, this could be either a different Chichak, or a coincidence.