The flattie spiders of the Selenops isopodus species group (Araneae: Selenopidae) with a review of Selenops records from Colombia Author Crews, Sarah C. California Academy of Sciences, Department of Entomology, 55 Music Concourse Drive, San Francisco, CA, 94118, USA. Author Galvis, William Grupo de Investigación de en Aracnología & Miriapodología (GAM-UN), Instituto de Ciencias Naturales, Universidad Nacional de Colombia, sede Bogotá, Colombia. Author Torres, Richard A. 0000-0003-1455-1981 Pós-graduação em Zoologia. Instituto de Ciências Biológicas. Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, CEP 31270 - 901, Brazil. Grupo de Investigación en Zoología y Ecología. Universidad de Sucre. Sucre, Colombia. richardtorree @ gmail. com; https: // orcid. org / 0000 - 0003 - 1455 - 1981 & Grupo de Investigación en Zoología y Ecología, Universidad de Sucre, Sucre, Colombia. richardtorree@gmail.com Author Gutiérrez-Estrada, Miguel A. Grupo de Investigación Ecología y Biodiversidad en Ecosistemas Tropicales (EBET), Facultad Ciencias Básicas y Aplicadas, Universidad de la Guajira, Riohacha, Colombia. Author Sarmiento, Jessica Grupo de Investigación en Recursos Naturales, Universidad de Pamplona, Pamplona, Colombia. Author Esposito, Lauren A. 0000-0002-5514-7486 California Academy of Sciences, Department of Entomology, 55 Music Concourse Drive, San Francisco, CA, 94118, USA. & lesposito @ calacademy. org; https: // orcid. org / 0000 - 0002 - 5514 - 7486 lesposito@calacademy.org text Zootaxa 2021 2021-04-21 4964 1 61 82 journal article 7075 10.11646/zootaxa.4964.1.3 19ec59cf-a6ba-4760-8a7f-dac3e88b0775 1175-5326 4706688 6E9CAF76-1905-4442-B355-5F9206BD9B16 Selenops curazao Alayón, 2001 Figs 2–3 , 8–11 , 21–22 , 34–35, 38 , 41, 44, 47 , 50, 52 Selenops curazao Alayón, 2001: 17–20 , figs 1–4 ( ♂ , ♀ ). Crews 2011: 18, figs 3–6 ( ♂ , ♀ ). Type material: Holotype (designated by Alayón 2001 ): male, CarMaBI (Caribbean Marine Biology Institute), Curaçao, Netherlands Antilles , September 1963 ( MCZ 44835, examined). Paratype : female, Piscadera Baai building, Curaçao, Netherlands Antilles , 18–30 December 1962 , H. & L. Levi ( MCZ 44836, examined) . Other material examined. See Crews (2011). Diagnosis. Females of Selenops curazao can be differentiated from other members of the S. isopodus group by the sclerotized septum found within the median field of the epigyne ( Fig. 21 ). Such a septum is absent and the median field is weakly sclerotized in the other species of the group ( Figs 18, 20, 24, 26–27 ). The copulatory ducts curve outward laterally, then back inward medially, then out again before curving back on themselves dorsally ( Fig. 22 ). Additionally, when the genitalia is viewed caudally, it is much narrower dorsoventrally than in the other species ( Fig. 52 ). Males of S. curazao can be differentiated from other members of the S. isopodus group by the posteriorly rounded, rather than proximally protruded, tegulum ( Fig. 34 ). Also, the tip of the conductor is angular rather than rectangular ( Figs 34 , 41, 44, 47 , 50 ). Description. See Crews (2011). Distribution. Curaçao , Bonaire ( Fig. 60 ). Life history and habitat preferences. This species has been collected under wood, rocks, cactus, and other debris on the ground, both near to and away from human dwellings. During the day, it can be found hiding in crevices near the ceiling molding in houses, emerging at night. It is found in dry thornscrub and dry forest ( Fig. 57 ). The female guards the white, flat, disc-shaped egg sac, and lays approximately 25– 50 eggs .