A new genus and five new species of pseudoscorpions (Arachnida, Pseudoscorpiones, Withiidae) from Colombia Author Romero-Ortiz, Catalina https://orcid.org/0000-0001-8939-7814 Laboratorio de Sistematica y Biologia Comparada de Insectos, Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogota, Colombia icromeroo@unal.edu.co Author Sarmiento, Carlos E. https://orcid.org/0000-0003-4012-8108 Laboratorio de Sistematica y Biologia Comparada de Insectos, Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogota, Colombia Author Harvey, Mark S. https://orcid.org/0000-0003-1482-0109 Collections and Research, Western Australian Museum, Welshpool, Western Australia 6106, Australia & School of Biological Sciences, The University of Western Australia, Crawley, Western Australia 6009, Australia text ZooKeys 2023 2023-11-22 1184 301 326 http://dx.doi.org/10.3897/zookeys.1184.106698 journal article http://dx.doi.org/10.3897/zookeys.1184.106698 1313-2970-1184-301 4EB4BEE3865E4CF29F7B6477D2DEF4AF 283A8869D1C3500A8A3C075E14584C90 Genus Cystowithius Harvey, 2004 Cystowithius Harvey 2004 : 440; Garcia and Romero-Ortiz 2021 : 2. Type species. Cystowithius smithersi Harvey, 2004, by original designation. Diagnosis. See Harvey (2004) . Remarks. The genus Cystowithius is endemic to Central and South America ( Harvey 2004 ; Garcia and Romero-Ortiz 2021 ), and currently contains five species: C. colombicus Harvey, 2004 and C. ankeri Garcia & Romero-Ortiz, 2021 from Colombia, C. ecuadoricus (Beier, 1959) and C. smithersi Harvey, 2004 from Ecuador and Peru, and C. chamberlini Harvey, 2004 from Mexico and Guatemala. Males are easily recognised by the presence of sternal invaginations (Figs 5D , 6A ).