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 lucasioides ( Vandel, 1953 ) Figs 2F, L , 3F , 14 , 15A–D , 16 , Table 1 Metoponorthus sexfasciatus lucasioides Vandel, 1953: 52 , fig. 2. Material examined SPAIN – Almeria • 8 ♂♂ , 5 ♀♀ ; Nijar , Cabo de Gata ; 15 Feb. 1984 ; A. Pollo leg.; cited by Cifuentes (2021a) ; MNCN 20.04/7164 . – Córdoba • 2 ♂♂ ; Venta del Charco ; 3 Apr. 1985 ; J. Cifuentes leg.; cited by Cifuentes (2021a) ; JC352 • 17 ♀♀ ; same collection data as for preceding; cited by Cifuentes (2021a) ; JC216. – Murcia • 4 ♀♀ ; Cabo Tiñoso ; 14 May 2022 ; I. Escarabajal Bernabé leg.; JC649 • 1 ♂ ; same collection data as for preceding; JC648 . Remarks Vandel (1953: 52) originally classified this taxon as a subspecies of P. sexfasciatus . He indicated distinctive characters, including pronounced granulations ( Fig. 14A ), few pores in the glandular fields, cephalon with a small median lobe, and medium-sized lateral lobes. In males, the carpus of the pereopods 1 and 2 possess dense setae, and the exopod I has a widened inner lobe at the base, terminating in a fine, narrow point ( Figs 14C , 15A ). The b/c and d/c coordinates are relatively low ( Figs 2F, L , 14B ). Additionally, it is noteworthy that the scale-setae possess a broad tip ( Fig. 3F ). The male exopod of the pleopod II is triangular ( Figs 14D , 15B ). Females exhibit a minor incision in the tracheal field on exopods I and II ( Fig. 15C–D ). Considering the aforementioned, we consider that P. lucasioides ( Vandel, 1953 ) possesses sufficient distinct characters to be considered a valid species ( Table 1 ), rather than a subspecies of P. sexfasciatus . In some specimens of both immature and adult P. lucasioides , the inner tip of the exopod I is occasionally underdeveloped, which increases the potential for misidentification with P. glabe r. However, distinguishing between these two species is feasible, as P. lucasioides has pronounced granulations and medium-sized lateral lobes on the cephalon, while P. glabe r either presents a smooth body or, in some specimens, may have sparse and very fine granulations on the cephalon, and lacks lateral lobes. Distribution Spanish providences of Almería : Fondón, Laujar de Andarax ( Vandel 1953 ) and Níjar ( Cifuentes 2021a ); Ávila : Piedralaves ( Pollo Zorita 1986b ); Córdoba : Morrón Grande ( Garcia 2019 ) and Venta del Charco ( Cifuentes 2021a ); Cuenca : Ruinas de Segóbriga ( Pollo Zorita 1986a , 2015 ); Jaén : Peñas ( Garcia 2019 ). It is recorded for the first time in the Spanish province of Murcia ( Fig. 16 ).