A new species of Spelunconiscus (Isopoda: Oniscidea: Styloniscidae) for Brazilian caves: new record for the type species and an emended diagnosis for the genus Author Ferreira, Rafaela Bastos-Pereira Leila A. Souza Beatriz de S. Sandi Rodrigo L. text Nauplius 2022 e 2022018 2022-07-15 30 1 16 https://doi.org/10.1590/2358-2936e2022018 journal article 10.1590/2358-2936e2022018 2358-2936 14667362 Genus Spelunconiscus Campos-Filho, Araujo and Taiti, 2014 Type species. Spelunconiscus castroi Campos-Filho, Araujo and Taiti, 2014 , by original designation and monotypy. Emended diagnosis. Body unpigmented, slender, flexible, able to bend, surface smooth, with pointed scale setae.Eyes absent.Antennal flagellum with at least 4 articles. Right mandible bearing (or not) one penicil in the molar process. Maxillule outer branch with one slender stalk. Maxilliped endite narrow surrounded by two or three spines. Male pereopod VII ischium with a proximal spur-like structure on the rostral face.Male pleopod I exopod longer or shorter than endopod.Male pleopod II endopod distal portion narrow, triangular or beak-like. Pleonites 3–5 with epimera reduced, adpressed, without visible posterior points.