New records and within-species variability of Iberian tardigrades (Tardigrada), with comments on the species from the Echiniscus blumi-canadensis series Author Guil, Noemí text Zootaxa 2008 1757 1 30 journal article 10.5281/zenodo.181845 29cad3d2-5685-4e65-9690-3604790334f6 1175-5326 181845 Milnesium tetralamellatum Pilato & Binda 1991 This species showed four peribuccal lamellae which distinguishes it from all other Milnesium species ( Tumanov 2006 ). The morphological differences, observed in the three specimens isolated were presence or absence of the basal spur on the outer claws. However, the basal spur presence (or absence) was constant within each specimen. Body size range was 1034 to 1595 μm, mean 1221 μm (SD 323). The species has been cited for Africa where it was originally described, but this is the first record for Europe ( Table 2 ). Milnesium tetralamellatum was detected only in one sampling point (Table 3).