Taxonomic and nomenclatural status of Iberian Algyroides (Lacertidae): Supplementary material

The taxonomy and nomenclature of Iberian <i>Algyroides</i> are problematic. The first taxon described, <i>A. hidalgoi</i> Boscá, 1916, was based on a single specimen that was subsequently lost. The description of the second taxon, <i>A. marchi </i>Valverde, 1958, was based on the comparison of a newly discovered population with the original description of <i>A. hidalgoi</i>. However, <i>A. hidalgoi</i> specimens have never been recorded since for any locality. Therefore, three questions need to be addressed: Is <i>A. hidalgoi</i> Boscá, 1916 a morphologically diagnosable taxon different from all non-Iberian species of <i>Algyroides</i>? are <i>A. hidalgoi</i> and <i>A. marchi</i> conspecific? And if so, which is the correct name for the species? To clarify the taxonomic status of the Iberian <i>Algyroides</i> we (1) compare Boscá’s <i>A. hidalgoi</i> original description against the descriptions of all other species of <i>Algyroides</i>, (2) test the accuracy of Boscá’s <i>A. hidalgoi</i> by comparing it against 204 Iberian museum specimens, and (3) designate a neotype of <i>A. hidalgoi</i> that fits the head pholidosis described in the original description. We show that none of the diagnostic characters used by Valverde to differentiate between <i>A. hidalgoi</i> and <i>A. marchi</i> are actually diagnostic, as we found high levels of variability on those characters in the studied specimens. Our results validate Boscá’s description of <i>A. hidalgoi</i>, which fits within the morphological variability observed for southern Iberian <i>Algyroides</i>. As a result, we propose the strict synonymy of <i>A. marchi</i> Valverde, 1958 with <i>A. hidalgoi</i> Boscá, 1916.