Trichoniscoides serrai Cruz 1993

Trichoniscoides serrai Cruz, 1993 Figs 14–16; Table 1 Trichoniscoides serrai Cruz, 1993: 18, figs 2a–h. Type material examined Holotype PORTUGAL – Bragança • ♂; Miranda do Douro, Grutas de Santo Adrião; 24 Feb. 1987; Antoni Serra leg.; Antonio Cruz col.; CRBA-86825. Allotype PORTUGAL – Bragança • ♀; same data as for holotype; Antonio Cruz col.; CRBA-86824. Paratypes PORTUGAL – Bragança • 6 ♀♀, same data as for holotype; Antonio Cruz col.; CRBA-86826 • 2 ♂♂; same data as for holotype; Antonio Cruz col.; CRBA-86827. Other material examined PORTUGAL – Bragança • 1 ♀; Miranda do Douro, Grutas de Santo Adrião; 41.5298° N, 6.4734° W; 29 Feb. 2024; L.P. Da Silva leg.; LPS879. Remarks This species is characterized by a granulated dorsal integument (Fig. 14A), antennae with tubercles bearing scale-setae, and pereopod 7 without sexual dimorphism (Table 1). The male pleopod I endopod (Figs 14B–C, 15A) has a short, wide and rounded distal lobe with a sinuous edge, and the exopod is triangular (Figs 14C, 15B), with a notch at the base of the two unequal ciliated rami, with the internal ramus thinner than the external. The male pleopod II endopod (Figs 14D, 15C) has a distal segment 1.8× the length of the basal segment, ending in a long, slender tip with a chitinous shaft accompanied by a hyaline membrane, and the exopod II is trapezoidal (Figs 14D, 15D). This is a troglobiotic species (Table 1). Distribution This Iberian Peninsula endemic species is known from two caves: Gruta de Santo Adrião in Miranda do Douro (Bragança, Portugal) (Cruz 1993; Fig. 16) and Cueva de Valporquero in Vegacervera (León, Spain; Cifuentes, 2019a), which are 166 km apart.