Porcellio dilatatus Brandt 1831

Porcellio dilatatus Brandt, 1831 Fig. 6 E Porcellio dilatatus Brandt in Brandt and Ratzeburg 1831: 78, Pl. 12, fig. 6 c, d; Vandel 1946: 316, fig. 135; Schmölzer 1971: 44. Porcellio (Porcellio) dilatatus Arcangeli, 1935 a: 12. Porcellio dilatatus dilatatus; Reboleira et al. 2015: 46. Material examined. Portugal – Sicó • 1 ♀; 39°58'51.8"N, 8°33'13.1"W; 20.VII.2022; leg. R. P. Eusébio; MSS pitfall trap; MNHNC: MB 11: 001122 • 1 ♂; 19.XII.2022; same data as for preceding; MNHNC: MB 11: 001274 • 1 ♂, 3 ♀♀; 20.III.2023; same data as for preceding; MNHNC: MB 11: 001371, 001382. – Montejunto • 1 ♂; 39°10'11.4"N, 9°04'14.8"W; 21.III.2023; leg. R. P. Eusébio; MSS pitfall trap; MNHNC: MB 11: 001389. – Arrábida • 22 ♂♂, 41 ♀♀, 182 juvs; 38°28'59.2"N, 9°00'09.9"W; 21.VII.2022; leg. R. P. Eusébio; MSS pitfall trap; MNHNC: MB 11: 001135, 001138, 001140, 001150, 001152, 001158, 001169, 001170, 001173, 001174 • 2 ♂♂, 12 ♀♀, 20 juvs; 20.IX.2022; same data as for preceding; MNHNC: MB 11: 001235, 001238, 001243, 001247 • 28 ♂♂, 23 ♀♀, 32 juvs; 20.XII.2022; same data as for preceding; MNHNC: MB 11: 001304, 001308, 001310, 001316, 001317, 001319, 001322, 001326, 001330, 001333 • 16 ♂♂, 13 ♀♀; 22.III.2023; same data as for preceding; MNHNC: MB 11: 001361, 001364, 001365, 001366. Distribution. Common across Europe and introduced into many parts of the world. Ecological notes. This species is mainly found in caves and MSS habitats but does not show any adaptation to subterranean habitats. Seasonal patterns in Portuguese MSS habitats. This species was found in three locations, Sicó, Montejunto and Arrábida. In Sicó and Montejunto it was found in very low numbers (Fig. 7 E). In Arrábida it was captured during all seasons, with abundance decreasing from spring to summer, then increasing slightly in fall and decreasing again in winter (Fig. 7 E).