The evolutionary history of the relict scorpion family Iuridae of the eastern Mediterranean.

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.

Evolution and radiation in the scorpion Buthus elmoutaouakili Lourenco and Qi 2006 (Scorpiones: Buthidae) at the foothills of the Atlas Mountains (North Africa).

When low dispersal ability of an organism meets geographical barriers, the evolution of inter- and intraspecific differentiation is often facilitated. In the Atlas massif of North Africa, the genus Buthus splits into several species and diverges into numerous genetic lineages, often following the orographic structures of mountain systems. Such high mountain ranges often act as barriers for species with reduced mobility even on small spatial scales. To study the effect of orographic structures on organisms with low dispersal ability, we collected 61 individuals of the scorpion species Buthus elmoutaouakili at 18 locations around the southwestern foothills of the High Atlas and Antiatlas and in the Sousse valley (western Morocco). We analyzed intraspecific differentiation patterns within this geographically restricted area of about 100 × 50 km using 452 bp of the cytochrome oxidase I mitochondrial gene. We detected 5 distinct genetic lineages. In a second analysis, we added 61 previously published sequences from Buthus species from Europe and North Africa. Using a molecular clock approach, we detected old splits (4-5 Ma) separating the samples from 1) the western High Atlas and north of these mountains, 2) the Sousse valley and adjoining mountain areas, and 3) the southwestern Antiatlas. Further differentiation happened in the first 2 geographical groups about 3 Ma. Thus, the divergence time estimates based on a Bayesian approach support the onset of differentiation into these main clades along the Pliocene (5-2.3 Ma) when climatic oscillations started and a constant global cooling preceded the glacial-interglacial cycles of the Pleistocene. Further genetic splits into parapatric groups are detectable for the Sousse valley main group in the early Pleistocene. The climatic oscillations of the Pliocene and early Pleistocene might have caused repeated range shifts, expansions, and retractions leading to repeated vicariance, hereby producing the hierarchical structure of genetic differentiation in B. elmoutaouakili. A taxonomic revision, including morphological and molecular data, is needed to assess the status of each of these Buthus scorpion lineages.

Reconstruction of a massive defect of the neck after a scorpion sting: A case report.

Introduction: Cutaneous traumas from scorpion sting envenomation are rare in European countries. Regarding Greece, Euscorpius sicanus' complex is the most widespread scorpion species. The venom of these small dark brown arthropods, which shelter in woods, usually provokes local cutaneous symptoms: erythema, edema, cellulitis, urticarial plaques, ulcers and rarely skin necrosis. We present a case of a massive soft tissue defect of the neck due to a scorpion sting managed by a Plastic Surgery Department in Greece. Case report: In March 2020, a 60 year-old lumberjack was referred to our Clinic due to a neck wound resulting from Euscorpius cf. sicanus sting. After multiple surgical debridements in combination with negative pressure wound therapy healthy tissue was achieved. Reconstruction followed using a 7cmX15cm vertical island trapezius musculocutaneous flap based on the dorsal scapular artery and rotated to cover the defect. The trapezius flap, donor site and graft healed well and resulted in satisfying contouring at the one-year follow-up. Conclusion: This case report is the first presenting Plastic Surgery reconstructive techniques for a massive neck defect after a Euscorpius cf. sicanus scorpion sting. Major complications of such stings need to be managed drastically for the optimum patient's outcome.

Microallopatry caused strong diversification in Buthus scorpions (Scorpiones: Buthidae) in the Atlas Mountains (NW Africa).

The immense biodiversity of the Atlas Mountains in North Africa might be the result of high rates of microallopatry caused by mountain barriers surpassing 4000 meters leading to patchy habitat distributions. We test the influence of geographic structures on the phylogenetic patterns among Buthus scorpions using mtDNA sequences. We sampled 91 individuals of the genus Buthus from 51 locations scattered around the Atlas Mountains (Antiatlas, High Atlas, Middle Atlas and Jebel Sahro). We sequenced 452 bp of the Cytochrome Oxidase I gene which proved to be highly variable within and among Buthus species. Our phylogenetic analysis yielded 12 distinct genetic groups one of which comprised three subgroups mostly in accordance with the orographic structure of the mountain systems. Main clades overlap with each other, while subclades are distributed parapatrically. Geographic structures likely acted as long-term barriers among populations causing restriction of gene flow and allowing for strong genetic differentiation. Thus, genetic structure and geographical distribution of genetic (sub)clusters follow the classical theory of allopatric differentiation where distinct groups evolve without range overlap until reproductive isolation and ecological differentiation has built up. Philopatry and low dispersal ability of Buthus scorpions are the likely causes for the observed strong genetic differentiation at this small geographic scale.