Chthoniidae Daday, 1888

Currently, the family is represented by 769 species, distributed in three subfamilies Chthoniinae, Lechtyiinae and Tridenchthoniinae. 

They are present in all terrestrial ecosystems, in continental and insular areas, commonly occurring in leaf litter, soil, under rocks and stones or inside caves (troglobian forms). Chthoniinae are characterized by the trichobotria eb and esb at the base of the fixed finger of the chela pedipalpal and the rallum blades arranged in two rows. The Lechytiinae are characterized by presenting the trichobotria eb and esb on the back of the hand forming an "L", the last curved and recumbent rallum blade. The Tridenchthoniinae are characterized by presenting the carapace with numerous setae between 80 and 160, intercoxal tubercle (if present) with a single seta. 

In Colombia, seven species have been reported and for the department of Córdoba, only three species have been recorded.