Revision of the genus Porcellionides Miers, 1877 (Isopoda: Porcellionidae) in the Ibero-Balearic region Author Cifuentes, Julio EC002DBE-9816-4034-92A0-0B3D4DCBB150 Departamento de Biología (Zoología), Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Cantoblanco, Madrid, Spain. jcifcol@gmail.com Author Da Silva, Luís P. E8D1AF11-1FB2-4BC5-A5E8-01E05ABDC5A8 CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485 - 661 Vairão, Portugal. & BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485 - 661 Vairão, Portugal. lfpascoals@cibio.up.pt text European Journal of Taxonomy 2024 2024-06-19 939 1 51 https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2573/11693 journal article 298682 10.5852/ejt.2024.939.2573 5e0a75cb-db2c-4050-b54d-4aea99af9c76 2118-9773 12156988 C8AD1685-DDA6-4F03-9189-BBC525F54A0D Porcellionides fuscomarmoratus ( Budde-Lund, 1885 ) Figs 2C , 3C , 4I–L , 8–9, Table 1 Metoponorthus fuscomarmoratus Budde-Lund, 1885: 189 . Material examined SPAIN – Granada • 2 ♀♀ ; Lanjarón ; 25 Mar. 2023 ; J.D. Gilgado and V.M. Pillado leg.; JC758 • 3 ♂♂ , 5 ♀♀ ; Tajos del Campanario , Sierra Nevada ; 2973 m a.s.l. ; Aug. 2013 – Aug. 2014 ; A. Tinaut leg.; UGMSS-2 • 4 ♀♀ ; Sierra Nevada (Monte caballo); 4 Oct. 1965 ; MNCN 20.04/8129 . The latest specimens are cited by Cifuentes (2021a) . Furthermore, 179 other specimens were previously studied, consisting of 38 males , 136 females and 5 immatures in earlier works (see Cifuentes 2021b ; Cifuentes et al. 2021 ). Remarks This species is easily recognized by having a highly convex body ( Table 1 ) and by its brown-yellowish coloration, with a distinct marbling pattern ( Fig. 8A ). It lacks granulations. The position of the noduli laterales shows little variation across tergites, although they follow the general pattern of being situated closer to the lateral and posterior edges in an anterior-posterior direction ( Figs 2C , 8B ). Scales-setae are triangular with very long and fine tips ( Fig. 3C ). The lateral lobes of the cephalon are reduced to protrusions. There is no transverse ridge on the pereon ( Fig. 8A , Table 1 ). The pleon is more or less retracted in relation to the pereon. In males, the carpus of the pereopod 1 has a brush of setae, the exopod of the pleopod I has a short, triangular, and pointed posterior inner tip ( Figs 4I , 8C), and the exopod of the pleopod II is triangular with a very long posterior inner tip ( Figs 4J , 8D). In females, they are similar to those of other studied species within the genus ( Fig. 4K–L ). Distribution Only in the eastern part of the Ibero-Balearic region ( Fig. 9 ). Spanish providences of Almería: Dalias ( Vandel 1953 ), Felix, Fondón, María and Vélez Rubio ( Cifuentes et al. 2021 ); Córdoba: Santa María de Trassierra ( Garcia 2019 ); Granada : Sagra ( Vandel 1953 ) and Sierra Nevada ( Vandel 1953 ; Cifuentes 2021a ); Islas Baleares: Cabrera ( Garcia & Cruz 1993 , 1996 ), Dragonera ( Garcia 2008 ), Ibiza ( Garcia & Cruz 1996 ) and Mallorca ( Garcia & Cruz 1996 ; Garcia 2009 ); Jaén: Cazorla ( Garcia 2013 ), Poblado de Vadillo-Castril, Quesada and Sierra de Cazorla ( Cifuentes 2021a ); Málaga: Antequera ( Dollfus 1892 ); Murcia: Sierra de Espuña ( Cifuentes 2021b ) and Yecla ( Garcia 2019 ).