The evolutionary history of the relict scorpion family Iuridae of the eastern Mediterranean
2022
Parmakelis, Aristeidis | Dimitriadou, Domniki | Gkigkiza, Evdokia | Karampatsou, Lydia | Stathi, Iasmi | Fet, Victor | Yağmur, Ersen A. | Kovařík, František
Iuridae is a family of scorpions that exhibits a highly complex biogeographic and taxonomic history. Iuridae taxa are mainly found in Turkey and Greece, whereas a single species is found in northern Iraq. Several taxonomic revisions have been conducted on this family that initially comprised two genera. The latest taxonomic review, based on morphological and anatomical features, raised the number of Iuridae genera to four, and the number of species to 14. Sequence data from three molecular markers (COX1, 16S rDNA, ITS1) originating from numerous Iuridae taxa were analyzed within a phylogenetic framework. Divergence time-estimate analyses, species delimitation approaches and estimation of ancestral areas were implemented in order to: (1) reconstruct the phylogenetic relationships of the Iuridae taxa, (2) evaluate the morphological classifications, and (3) obtain insights into the biogeographic history of the family in the East Mediterranean. The multi-locus phylogeny clearly confirms an ancient division into two clades, Calchinae and Iurinae. Ancient patterns of isolation and dispersal are revealed. Both subfamilies are largely confined to the Anatolian peninsula and its few coastal islands; only the most derived genus Iurus has dispersed westward to Crete and Peloponnese. Based on our findings, three new genera of Iurinae (Metaiurus, Anatoliurus, and Letoiurus) are established. The genus Neocalchas emerges as one of the most ancient scorpion clades, with divergence time about 27 mya.
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