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Issue: Vol. 5692 No. 1: 11 Sept. 2025
Type: Article
Published: 2025-09-11
DOI: 10.11646/zootaxa.5692.1.4
Page range: 77-107
Abstract views: 94
PDF downloaded: 3

The first Brazilian troglobitic species of Cirolanidae (Isopoda, Cymothoida)—a potentially threatened species

Universidade Estadual do Ceará (UECE); Laboratório de Isopoda (LABISO); Fortaleza; CE; CEP. 60714-903; Brazil.
Universidade do Estado do Rio de Janeiro (UERJ); Departamento de Ciências (DCIEN); São Gonçalo; RJ; CEP. 24435-005; Brazil.
Instituto Chico Mendes de Conservação da Biodiversidade/Centro Nacional de Pesquisa e Conservação de Cavernas (ICMBio/ CECAV-RN); Natal; RN; CEP. 59015-350; Brazil.
Universidade Federal do Rio Grande do Norte (UFRN); Laboratório de Ictiologia Sistemática e Evolutiva; Natal; RN; CEP. 59078- 900; Brazil.
Universidade Federal de Lavras (UFLA); Centro de Estudos em Biologia Subterrânea (CEBS); Aquenta Sol; MG; CEP. 37200-000; Brazil.
Crustacea Stygobiont Integrative taxonomy Caatinga Province Phylogeny DNA

Abstract

Brasilana spelaea gen. nov. et sp. nov. is described from caves from Rio Grande do Norte and Ceará states, northeast Brazil. Although this represents the first stygobiont species of Cirolanidae known for Brazil, it is already at risk of extinction considering the limestone industry, unregulated tourism, and subterranean water exploitation in most of the areas where it occurs. The new genus differs from its congeners by having a unique set of characters and exclusive traits, such as the geniculate antennular peduncle and the distal dorsal lobe in the posterior face of basis of pereopods 1–7. Although specimens of Brasilana spelaea gen. nov. et sp. nov. were collected from nine geographically distant caves, recent phylogeographic studies suggest that it belongs to a single species, likely dispersed through subterranean aquifers of the Jandaíra Formation. Additionally, the morphological and molecular phylogenetic analyses presented here provide robust support for the establishment of a new genus and species.

 

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How to Cite

Souza, L.A., Senna, A.R., Bento, D.M., Lima, S.M.Q. & Ferreira, R.L. (2025) The first Brazilian troglobitic species of Cirolanidae (Isopoda, Cymothoida)—a potentially threatened species. Zootaxa, 5692 (1), 77–107. https://doi.org/10.11646/zootaxa.5692.1.4