Descriptions of three new species of jumping-spiders, genus Arnoliseus (Araneae, Salticidae), from Rio de Janeiro state, Brazil, with comments on their genital morphology and a key to species Author Baptista, Renner Luiz Cerqueira Laboratorio de Diversidade de Aracnideos, Universidade do Brasil / Universidade Federal do Rio de Janeiro. Av. Carlos Chagas Filho 373, 21941 - 902, Ilha do Fundao, Rio de Janeiro, Brazil Author Castanheira, Pedro de Souza https://orcid.org/0000-0002-0623-1622 Laboratorio de Diversidade de Aracnideos, Universidade do Brasil / Universidade Federal do Rio de Janeiro. Av. Carlos Chagas Filho 373, 21941 - 902, Ilha do Fundao, Rio de Janeiro, Brazil pedrocastanheira.bio@gmail.com Author Oliveira, Gabriel Assuncao Laboratorio de Diversidade de Aracnideos, Universidade do Brasil / Universidade Federal do Rio de Janeiro. Av. Carlos Chagas Filho 373, 21941 - 902, Ilha do Fundao, Rio de Janeiro, Brazil Author Prado, Andre Wanderley do Laboratorio de Diversidade de Aracnideos, Universidade do Brasil / Universidade Federal do Rio de Janeiro. Av. Carlos Chagas Filho 373, 21941 - 902, Ilha do Fundao, Rio de Janeiro, Brazil text Zoosystematics and Evolution 2020 2020-02-24 96 1 73 90 http://dx.doi.org/10.3897/zse.96.46509 journal article http://dx.doi.org/10.3897/zse.96.46509 1860-0743-1-73 112F19F9A19149D896639A30B25746F0 8ED8962E4599532FBA03D4D1F3EB0764 Arnoliseus Braul, 2002 Arnoliseus Braul in Braul and Lise 2002 : 100. Type species. Vinnius calcarifer Simon, 1902, by original designation. Diagnosis. Arnoliseus can be recognized by the following set of characters: bulb with a thick embolus, overlying the tegulum, bearing a wide retrolateral keel, basal article of male chelicerae with a large curved or straight ectal apophysis (or mastidia), male palp with a bifid RTA (dorsal and ventral branches), separated by a notch of variable depth, and an inner hook, epigyne with two semicircular slit-like copulatory openings placed posteriorly in the poorly defined epiginal plate, close to epigastric furrow; female internal genitalia in a transversal position, with all structures at a similar level, much wider than long (Figs 1F, G, 2E, F, 3A-F, 4F, G, 5B, 6E, F, 7A-F, 8F, G, 9A-D, 10E, F).