The pseudoscorpion family Withiidae is widely distributed around the world, with most of its diversity in tropical areas. Five new species and a new genus from Colombia are described: Cystowithius florezisp. nov., Parawithius bromelicolasp. nov., Oligowithius achaguasp. nov., and the genus Paciwithiusgen. nov. with two species Paciwithius valduparensissp. nov. and Paciwithius chimbilacussp. nov. A reassessment of the subgenus Dolichowithius (Oligowithius) Beier, 1936 allows the elevation to a full generic level, and the transfer of the only known species to Oligowithius, forming the new combination Oligowithius abnormis (Beier, 1936), comb. nov.