Terrestrial isopods (Crustacea, Isopoda, Oniscidea) from Mesovoid Shallow Substratum habitats of Portugal

By

Eusébio, Rita
Taiti, Stefano
Reboleira, Ana Sofia P. S.

Type

Article

Date of Publication

2025-10-8

Original Publication

Subterranean Biology

Volume

53

Pages

129--153

Subjects

Crustaceans , Iberian Peninsula , new species , shallow subterranean habitats , subterranean ecosystems

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/subtbiol.53.163632

 

Abstract

The Mesovoid Shallow Substratum (MSS) is a largely unknown subterranean habitat formed by the accumulation of rock fragments in steep slopes. In this study, we investigated the diversity, abundance and seasonal dynamics of terrestrial isopods in MSS habitats across Portugal. We identified 12 species belonging to five families, with Porcellionidae and Armadillidiidae being the most represented. The new species, Eluma cristata, endemic to the MSS of Alcobertas, is described. The terrestrial isopod communities included both surface-dwelling and subterranean-adapted species, pointing out the connectivity between these habitats and highlighting the adaptability of terrestrial isopods to diverse environments. Widespread species occurring in multiple locations, and species confined to single sites are present. Seasonality does not seem to affect the community composition. Our findings highlight the rich diversity of MSS habitats, thus their importance for conservation.