The genus Alloniscus Dana, 1854 includes 23 known species occurring exclusively in littoral habitats. The genus has never been recorded from the Atlantic coastal region of the Americas. This work describes the new species Alloniscus buckupi n. sp. from João Pessoa, Paraíba, Brazil, and provides the first record of the genus from the Atlantic coastal region.

All species of Brazilian terrestrial isopod known up to date, including references and distribution information, are listed. The list comprises 189 valid species, 135 of which are endemic to the country, 22 are recorded also from other countries in the Americas, 20 are introduced, and 12 have circumtropical or pantropical distributions.

Mise en lumière des isopodes souterrains brésiliens (Isopoda, Oniscidea): élargissement des données de distribution et description de nouveaux taxons. Quatorze espèces d'isopodes terrestres (Oniscidea) des régions karstiques brésiliennes sont décrites comme nouvelles, i.e., Novamundoniscus mandacaru Campos-Filho, Araujo & Bichuette, n. sp. (Dubioniscidae), Diploexochus exu Campos-Filho, Sfenthourakis & Bichuette, n. sp, Gabunillo enfurnado Campos-Filho, Sfenthourakis & Bichuette, n. sp., Venezillo moreirai Campos-Filho, Carpio-Díaz & Bichuette, n. sp., V. garimpeiro Campos-Filho, Borja-Arrieta & Bichuette, n. sp., V. dioi Campos-Filho, Araujo & Taiti, n. sp., V. limai Campos-Filho, Carpio-Díaz & López-Orozco, n. sp. et V. muriloi Campos-Filho, Sfenthourakis & Taiti, n. sp. (Armadillidae) de l'État de Bahia; N. canopus Campos-Filho, Gallo & Gallão, n. sp. de l'État de Goiás, Caraiboscia jabutiensis Campos-Filho, Taiti & Bichuette, n. sp. (Philosciidae), Circoniscus caeruleus Campos-Filho, Sfenthourakis & Bichuette, n. sp. (Scleropactidae), Trichorhina amplitelson Campos-Filho, Carpio-Díaz & Borja-Arrieta, n. sp. (Platyarthridae), et N. kayabi Campos-Filho, Sfenthourakis & Araujo, n. sp. de l'État du Mato Grosso, et Diploexochus carrapicho Campos-Filho, López-Orozco & Taiti, n. sp. de l'État du Mato Grosso do Sul. En outre, les connaissances sur la distribution de Benthana olfersii (Brandt, 1833), B. taeniata Araujo & Buckup, 1994 (Philosciidae), Ctenorillo ferrarai Campos-Filho, Araujo & Taiti, 2014, Cubaris murina Brandt, 1833 (Armadillidae), et Porcellionides pruinosus Brandt, 1833 (Porcellionidae) sont élargies. Des cartes de distribution, la caractérisation des grottes où les espèces ont été collectées et des remarques sur le milieu souterrain sont données.

To date, approximately 190 species of terrestrial isopods are known from Brazil and only 14 are considered troglobiotic. After the examination of a large collection from caves in Bambuí and Una geomorphological areas, along the states of Bahia, Minas Gerais and Goiás, two new troglobiotic species were recognized. Pectenoniscus liliae Campos-Filho, Bichuette & Taiti sp. n. (Styloniscidae) is described from Serra do Ramalho karst area, and Benthana xiquinhoi Campos-Filho, Bichuette & Taiti sp. n. (Philosciidae) from sandstone caves of Chapada Diamantina region. The latter constitutes the second troglomorphic species of the genus. Xangoniscus aganju (Styloniscidae) is also recorded from two caves in the Serra do Ramalho karst area. The systematic position of Iuiuniscus iuiuensis is briefly discussed and Venezillo congener (Armadillidae) is redescribed from São Domingos karst area.

A large collection of terrestrial isopods from different Brazilian regions was examined. Two new species of Amazoniscus Lemos de Castro, 1967 (Scleropactidae) are described: A. zimmeri Campos-Filho, Montesanto & Araujo sp. nov. from the state of Pará and A. schmidti Campos-Filho, Montesanto & Taiti sp. nov. from the state of Minas Gerais. Pseudotyphloscia alba (Dollfus, 1898) (Philosciidae) is firstly recorded from Brazil. The systematic position of Venezillo tuberosus (Budde-Lund, 1904) is discussed and transferred to Ctenorillo Verhoeff, 1942. Androdeloscia lejeunei (Lemos de Castro & Souza, 1986) and Diploexochus echinatus Brandt, 1833 from the state of Pará, are redescribed.