Recently created as a family (previously Hesperolpiinae as a subfamily of Olpiidae), it is composed of 90 species distributed in 12 genera. They are found in most regions of the world, occur mainly in xeric habitats, under stones, in litter and under the bark of trees, also in marine environments. Characterized by the long venom ducts, which are extremely long and extend beyond the trichobotrium et.
Apolpium sp. Male
Pachyolpium isolatum (R.V. Chamberlin, 1925). Female.
Pachyolpium isolatum (R.V. Chamberlin, 1925). Male.
Planctolpium arboreum Hoff, 1964. Female.
Planctolpium arboreum Hoff, 1964. Male.
In Colombia it is represented by five species, and for the department of Córdoba only three species have been recorded.