AbstractSocial parasitism is more commonly found among the Hymenoptera. However, a recent study reported a case of parasitism between Neotropical pseudoscorpion species. Here, we extend the knowledge about this relationship, adding information about the species from Colombia. Sampling of Paratemnoides nidificator colonies in a secondary dry forest revealed the presence of two other species of pseudoscorpions also sharing the nest of the host. We presented data about the occurrence of Parachernes melanopygus and a second inquiline species of genus Lustrochernes (both Chernetidae) and how they affect the host species. Aspects of the species ecology and behaviour are discussed.KEY WORDS: inquilinismparasitismArachnidaPseudoscorpionesNeotropical pseudoscorpionsAtemnidaeChernetidae ACKNOWLEDGEMENTSWe want to thank Dr Carmen Viera, Dr David Wise, Msc Alexander Sabogal and three anonymous reviewers for discussions and feedback about this research and suggestions on the manuscript. We thank Dr Mark S. Harvey for the species identification, and Elías Amorteguí who kindly helped us with all the paperwork to conduct this research. We also want to thank the "Corporación de Turismo del Huila" for financial support, and the Aspaen Gimnasio la Fragua School for the permits to sample the specimens.DISCLOSURE STATEMENTNo potential conflict of interest was reported by the authors.