FIG. 1 in Polydesmid millipedes in the MSS of the northern Iberian Peninsula (Diplopoda, Polydesmida, Polydesmidae)

FIG. 1. — Location of sampling sites and installation of subterranean sampling devices (SSDs): A, physical map of the northern Iberian Peninsula with sampling points marked in green (Cantabrian Range), yellow (Iberian System) and blue (Pyrenees); codes as in Table 1; B, hole digging in a scree; C, multiperforated tube (1 m) placed in the hole; D, buried tube with open top and pitfall trap about to be installed inside; E, fully installed SSD and covered with stones.