Porcellionides sexfasciatus ( Budde-Lund, 1885 )

Cifuentes, Julio & Da Silva, Luís P., 2024, Revision of the genus Porcellionides Miers, 1877 (Isopoda: Porcellionidae) in the Ibero-Balearic region, European Journal of Taxonomy 939, pp. 1-51 : 36-40

Porcellionides sexfasciatus ( Budde-Lund, 1885)

Figs 2J, L , 3J , 15 Q-T, 23–24, Table 1

Metoponorthus sexfasciatus Budde-Lund, 1885:167 .

Material examined

PORTUGAL – Aveiro • 1 ♂; Vagueira ; 40.5611° N, 8.7579° W; 24 Sep. 2022; L.P. Da Silva leg.; LPS453a • 1 ♀; same collection data as for preceding; LPS453b • 1 ♂; Vagueira ; 40.5612° N, 8.7580° W; 24 Sep. 2022; L.P. Da Silva leg.; LPS455a • 1 ♀; same collection data as for preceding; LPS455b . – Coimbra • 1 ♂; Cabedelinho beach; 40.1410° N, 8.8652° W; 6 Mar. 2022; L.P. Da Silva leg.; LPS128 • 1 ♀; Coimbra, Jardim Botânico da Universidade de Coimbra ; 40.2074° N, 8.4221° W; 17 Jun. 2022; L.P. Da Silva leg.; LPS381 • 2 ♂♂; same collection data as for preceding; LPS382a • 1 ♀; same collection data as for preceding; LPS382b • 2 ♀♀; same collection data as for preceding; LPS383 • 2 ♂♂; same collection data as for preceding; LPS384 • 1 ♂; Portunhos ; 40.2943° N, 8.5473° W; 16 Jan. 2021; L.P. Da Silva leg.; LPS24 • 5 ♀♀; Praia de Mira ; 40.4508° N, 8.8015° W; 16 Jun. 2022, L.P. Da Silva leg.; LPS368 . – Faro • 2 ♀♀; Caminho da Rocha ; 37.1406° N, 8.6086° W; 28 Dec. 2022; L.P. Da Silva leg.; LPS687 • 1 ♀; Praia de Faro ; 37.0113° N, 8.0010° W; 29 Dec. 2022; L.P. Da Silva leg.; LPS696 • 1 ♀; Sagres ; 37.0178° N, 8.9473° W; 28 Dec. 2022; L.P. Da Silva leg.; LPS674 • 1 ♂; Sagres ; 37.0177° N, 8.9473° W; 28 Dec. 2022; L.P. Da Silva leg.; LPS677a • 1 ♀; same collection data as for preceding; LPS677b . – Porto • 1 ♂; Areia ; 41.3290° N, 8.7383° W; 3 May 2022; L.P. Da Silva leg.; LPS335 • 1 ♀; Areia ; 41.3292° N, 8.7384° W; 3 May 2022; L.P. Da Silva leg.; LPS336 • 1 ♂; Areia ; 41.3305° N, 8.7378° W; 10 Dec. 2021; L.P. Da Silva leg.; LPS06 • 1 ♂; Areia ; 41.3290° N, 8.7383° W; 14 Jun. 20221; L.P. Da Silva leg.; LPS367a • 1 ♀; same collection data as for preceding; LPS367b • 1 ♂; Azurara ; 41.3401° N, 8.7457° W; 13 Nov. 2022; L.P. Da Silva leg.; LPS509 . – Setubal • 1 ♀; Herdade da Ribeira Abaixo ; 38.1072° N, 8.5700° W; 28 Apr. 2022; L.P. Da Silva leg.; LPS287 .

SPAIN – Barcelona • 4 ♂♂, 2 ♀♀; Malgrat ; 1 May 1981; J. Cifuentes leg.; JC351 • 7 ♂♂, 3 ♀♀; Malgrat ; 5 May 1981; J. Cifuentes leg.; JC75 . – Guadalajara • 1 ♂, 1 ♀; Sigüenza ; 19 Apr. 2023; J.D. Gilgado leg.; JC748. – Islas Baleares • 1 ♂, 2 ♀♀; La Cabrera ; 21 Apr. 1973; E. Ortiz de Vega leg.; MNCN 20.04/12158 • 12 ♂♂, 12 ♀♀; La Cabrera ; 14. Jul. 1978; A. Pollo leg.; MNCN 20.04/7358 • 1 ♂, 1 ♀; La Cabrera ; 23 Jul. 1978; A. Pollo leg.; MNCN 20.04/12140 • 2 ♂♂, 4 ♀♀; La Cabrera ; 23 Jul. 1978; A. Pollo leg.; MNCN 20.04/12143 • 8 ♂♂, 4 ♀♀; La Cabrera ; 23 Jul. 1978; A. Pollo leg.; MNCN 20.04/7359 • 7 ♂♂; Menorca, Maó, Es Grau ; 21 Mar. 1989; A. Cruz leg.; A. Cruz coll., CRBA-86562 • 5 ♂♂; Menorca, Ciutadella, Platja dels Algaiarens , La Vall; 23 Mar. 1989; A. Cruz leg.; A. Cruz coll., CRBA-86565 • 7 ♂♂, 3 ♀♀; Palma de Mallorca ; 1894; MNCN 20.04/12153 • 1 ♂; Palma de Mallorca ; 10 Mar. 1954; A. Compte leg.; MNCN 20.04/7932 • 1 ♀; Palma de Mallorca ; 8 Mar. 1959; A. Compte leg.; MNCN 20.04/7951. – Madrid • 2 ♂♂, 1 ♀; Colmenar de Oreja ; 14 Mar. 1979; A. Pollo leg.; MNCN 20.04/6933 • 1 ♀; Madrid ; 17 May 1950; J.L. Sampedro leg.; MNCN 20.04/12160 • 1 ♂; Madrid, Casa de Campo ; 1 Jun. 1953; A. Martinez Castellote leg.; Schmölzer coll., MNCN 20.04/9651 • 1 ♀; Madrid ; 1 Apr. 1979; G. Florez leg.; MNCN 20.04/12362 .

Remarks

Vandel (1946) places the origin of this species in either Morocco or Portugal, asserting it to be highly abundant. However, both the captures conducted in Portugal and the bibliographic references from this country do not provide support for the claim made by this author. While it is a well-known species, for easier differentiation from the other species studied, we emphasize that the body is elongated, the dorsal side of the exoskeleton exhibits very fine granulations ( Fig. 23A ). The noduli laterales coordinates, particularly d/c, are among the highest of the studied species, exceeded only by that of P. glaber on some pereonites ( Figs 2J, L , 23B ). Scale-setae are triangular, short and pointed ( Fig. 3J ). On the cephalon, the lateral lobes are faintly marked ( Table 1 ). The pereonites II to VII exhibit a transverse ridge. In males, the pereopods lack sexual differentiation, the exopod of the pleopod I has a very long, wide, and rounded posterior inner tip ( Figs 15Q , 23C ), and the exopod of the pleopod II is triangular ( Figs 15R , 23D ). In females, the exopods of the pleopods I and II resemble those of the other studied species ( Fig. 15S–T ).

Distribution

The distribution range of this species includes the western Mediterranean, and due to its anthropophilic nature, it has been introduced to other regions across the world ( Vandel 1946; Schmalfuss 2003). In the Ibero-Balearic region, it has been reported from the Portuguese districts of Faro: Serra de Malhão ( Schmölzer 1971) and Serra de Monchique ( Vandel 1962); Leiria: Serra de Alvaiazere and Serra de Minde ( Vandel 1962); Lisboa: Mafra ( Preudhomme De Borre 1886); Viseu: Serra do Caramulo ( Vandel 1962). Given the high number of records from Spain, only the provinces are listed: Alicante ( Vandel 1962; Cifuentes 2021b); Almería ( Dollfus 1892; Vandel 1962; Cifuentes et al. 2021); Badajoz (Garcia et al. 2021); Barcelona ( Schmölzer 1971; Cruz 1991); Burgos (the record by Agüera de Vivar et al. (1984) corresponds to this province); Cáceres (Garcia et al. 2021); Cádiz ( Schmölzer 1955a, 1971; Cifuentes 2021a); Castellón ( Español 1958); Córdoba ( Budde-Lund 1885); Coruña ( Cifuentes 2019); Gerona ( Budde-Lund 1885; Pablos 1964; Schmölzer 1971); Guipúzcoa ( Vandel 1962; Cifuentes et al. 2021); Granada ( Dollfus 1892; Vandel 1962; Schmölzer 1971); Huelva ( Dollfus 1892; Cifuentes 2021a); Islas Baleares ( Dollfus 1892; Vandel 1961, 1962; Bellés et al. 1989; Cruz 1989; Garcia & Cruz 1993, 1996; Vadell 2003; Vadell & Zaragoza 2005; Vadell et al. 2006; Garcia 2008); Jaén ( Schmölzer 1971); Lugo ( Schmölzer 1955a); Madrid ( Pollo Zorita 1986a, 2015; Garcia & Cabanillas 2021); Málaga ( Budde-Lund 1885; Schmölzer 1955a, 1971; Vandel 1962; Wallace Moreno & Berrocal Pérez 2002; Del Rosal Padial et al. 2009; Cifuentes 2021a); Murcia ( Cifuentes 2021b); Navarra ( Cifuentes 1984); Pontevedra ( Schmölzer 1955a; Cifuentes 2019; Marmaneu et al. 2019); Sevilla ( Budde-Lund 1885; Dollfus 1892; Schmölzer 1971); Teruel ( Barrientos 2005).

It is recorded for the first time in the Portuguese districts of Aveiro, Coimbra, Porto and Setubal, and the Spanish province of Guadalajara ( Fig. 24 ).

Figures

Fig. 2. Relation between noduli laterales coordinates (following Vandel 1960) d/c (y-axis) and b/c (x-axis) multiplied by 100 for all studied species. A. Porcellionides cingendus (Kinahan, 1857). B. Porcellionides elegans(Pollo Zorita, 1982). C. Porcellionides fuscomarmoratus(Budde-Lund, 1885). D. Porcellionides glaber (Koch, 1856). E. Porcellionides hispanus (Vandel, 1953). F. Porcellionides lucasioides (Vandel, 1953). G. Porcellionides lusitanus (Vandel, 1946). H. Porcellionides molleri (Verhoeff, 1901). I. Porcellionides pruinosus (Brandt, 1833). J. Porcellionides sexfasciatus (BuddeLund, 1885). K. Porcellionides ibericus sp. nov. L. P. sexfasciatus and its previously considered subspecies: P. glaber (g), P. hispanus (h), P. lucasioides (l), P. lusitanus (lu), P. molleri (m) and P. sexfasciatus (s).

Fig. 3. Scale-setae. A. Porcellionides cingendus (Kinahan, 1857), ♂ (JC104). B. Porcellionides elegans (Pollo Zorita, 1982), ♂ (MNCN 20.04/7306). C. Porcellionides fuscomarmoratus (BuddeLund, 1885), ♀ (MNCN 20.04/8129). D. Porcellionides glaber (Koch, 1856), ♀ (MNCN 20.04/11490). E. Porcellionides hispanus (Vandel, 1953), ♂ (MNCN 20.04/7163). F. Porcellionides lucasioides (Vandel, 1953), ♂ (JC352). G. Porcellionides lusitanus (Vandel, 1946), ♂ (LPS661). H. Porcellionides molleri (Verhoeff, 1901), ♀ (LPS135). I. Porcellionides pruinosus (Brandt, 1833), ♀ (JC318). J. Porcellionides sexfasciatus (Budde-Lund, 1885), ♂ (LPS455a). Scale bar = 0.01 mm.

Fig. 15. Pleopods. A–D. Porcellionides lucasioides (Vandel, 1953). A–B. ♂ (JC648). A. Exopod I. B. Exopod II. C–D. ♀ (JC216). C. exopod I. D. Exopod II. E–H. Porcellionides lusitanus (Vandel, 1946). E–F. ♂ (LPS661). E. Exopod I. F. Exopod II. G–H. ♀ (LPS644). G. Exopod I. H. Exopod II. I–L. Porcellionides molleri (Verhoeff, 1901), ♂ (JC237). I. Exopod I. J. Exopod II. K. Exopod I. L. Exopod II.M–P. Porcellionides pruinosus(Brandt, 1833). M–N. ♂ (JC383). M. Exopod I.N. Exopod II. O–P. ♀ (JC42). O. Exopod I. P. Exopod II. Q–T. Porcellionides sexfasciatus (Budde-Lund, 1885). Q–R. ♂ (LPS455a). Q. Exopod I. R. Exopod II. S–T. ♀ (JC75). S. Exopod I. T. Exopod II. Scale bars = 0.1 mm.

Fig. 23. Porcellionides sexfasciatus (Budde-Lund, 1885). A. ♂ (LPS455a), habitus. B. Noduli laterales coordinates. C–D. ♂ (LPS455a). C. Exopod I. D. Exopod II. Scale bars: A = 1 mm; C–D = 0.1 mm.

Fig. 24. Localization of the Ibero-Balearic region in Europe and the distribution of Porcellionides sexfasciatus (Budde-Lund, 1885).