Porcellionides fuscomarmoratus ( 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 : 13

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).

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. 4. Pleopods. A–D. Porcellionides cingendus (Kinahan, 1857). A–B. ♂ (LPS215). A. Exopod I. B. Exopod II. C–D. ♀ (MNCN 20.04/11972). C. Exopod I. D. Exopod II. E–H. Porcellionides elegans (Pollo Zorita, 1982). E–F. ♂ (JC490). E. Exopod I. F.Exopod II. G–H. ♀ (MNCN 20.04/9590). G. Exopod I. H. Exopod II. I–L. Porcellionides fuscomarmoratus (Budde-Lund, 1885). I–J. ♂ (UGMSS-2). I. Exopod I. J. Exopod II. K–L. ♀ (MNCN 20.04/8129. K. Exopod I. L. Exopod II. M–P. Porcellionides glaber (Koch, 1856). M–L. ♂ (MNCN 20.04/7886). M. Exopod I. N. Exopod II. O. ♀ (MNCN 20.04/11490), exopod I. P. ♀ (MNCN 20.04/11490), exopod II. Q–T. Porcellionides hispanus (Vandel, 1953). Q–R. ♂ (MNCN 20.04/7163). Q. Exopod I. R. Exopod II. S–T. ♀ (JC380). S. Exopod I. T. ♀ (JC380), exopod II. Scale bars = 0.1 mm.

Fig. 8. Porcellionides fuscomarmoratus (Budde-Lund, 1885). A. ♀ (JC758), habitus. B. Noduli laterales coordinates. C. ♂ (UGMSS-2), exopod I. D. ♂ (UGMSS-2), exopod II. Scale bars: A = 1 mm; C–D = 0.1 mm.

Fig. 9. Localization of the Ibero-Balearic region in Europe and the distribution of Porcellionides fuscomarmoratus (Budde-Lund, 1885).