Euscorpius is the first research publication completely devoted to scorpions (Arachnida: Scorpiones). Euscorpius takes advantage of the rapidly evolving medium of quick online publication, at the same time maintaining high research standards for the burgeoning field of scorpion science (scorpiology). Euscorpius is an expedient and viable medium for the publication of serious papers in scorpiology, including (but not limited to): systematics, evolution, ecology, biogeography, and general biology of scorpions. Review papers, descriptions of new taxa, faunistic surveys, lists of museum collections, and book reviews are welcome. Derivatio Nominis The name Euscorpius Thorell, 1876 refers to the most common genus of scorpions in the Mediterranean region and southern Europe (family Euscorpiidae).

This revision is based on a comprehensive analysis of largely new, very extensive material encompassing 341 specimens (58 from Greece and 283 from Turkey). The type species Iurus dufoureius (Brullé, 1832) is restricted to Greece. Iurus asiaticus Birula, 1903 is confirmed as a distinct species, limited to eastern Anatolia. Most widespread in southern Turkey is another species, Iurus kraepelini von Ubisch, 1922, which is here restored from synonymy. We also describe two new species from Turkey: Iurus kadleci, sp. nov. from Antalya and Mersin Provinces (sympatric with I. kraepelini), and Iurus kinzelbachi, sp. nov. from İzmir and Aydın Provinces; therefore, fauna of Turkey includes four species of Iurus. Neotypes of I. dufoureius and I. kraepelini, and lectotype and paralectotypes of I. asiaticus are designated. Status of Iurus populations from the eastern Aegean islands of Greece (Fourni, Karpathos, Kasos, Rhodes, Samos, Saria) remains to be determined. A map of the distribution of Iurus is presented, based on 198 localities (79 in Greece and 119 in Turkey). Abbreviations The four-letter institutional abbreviations listed below and used throughout are mostly after Arnett et al.

Iurus populations from the Aegean area are studied, including the Greek islands of Crete, Karpathos, Kythira, Rhodes, and Samos. A new genus, Protoiurus gen. nov., and two new species, Protoiurus rhodiensis sp. nov. and P. stathiae sp. nov., are described. The two genera, Iurus and Protoiurus, are diagnosed by their hemispermatophore structure; a cladistic analysis based on this structure is presented. Genus Iurus Thorell, 1876 includes three species: I. dekanum, I. dufoureius, and I. kinzelbachi; genus Protoiurus includes five species: P. asiaticus comb. nov., P. kadleci comb. nov., P. kraepelini comb. nov., P. rhodiensis sp. nov., and P. stathiae sp. nov. The type specimen of Chaerilomma dekanum Roewer, 1943 has been studied and determined to be a valid species Iurus dekanum (Roewer, 1943) representing the population from Crete. New diagnoses for subfamilies Calchinae (genus Calchas) and Iurinae (genera Iurus and Protoiurus) are provided as well as keys to the species of Iurus and Protoiurus.

Leiurus abdullahbayrami sp. nov. is described from Southeastern Turkey and compared with other species of the genus, in particular with L. quinquestriatus, which was previously misidentified from Turkey. The new species is readily distinguished from other members of the genus by pedipalp chela and metasomal segments that are distinctly shorter than in L. quinquestriatus; metasomal segment V has large and rounded lobes; trichobothrium db on the fixed finger of pedipalp is located between trichobothria est and esb (in L. quinquestriatus it is located between et and est). All known Turkish populations of Leiurus were examined and found to represent the new species.

Venom of Leiurus abdullahbayrami (Scorpiones: Buthidae) is an extremely toxic one and it stimulates voltage-gated sodium and potassium channels. In case of a stung by this scorpion; excessive catecholamine release occur and it impairs left ventricle contractility and consequently a heart failure occurs (scorpion sting-related cardiomyopathy). In addition to this cardiac-induced acute pulmonary, edema may occur in severe cases too. An 11-year-old male child who was stung by a scorpion (species: Leiurus abdullahbayrami) consulted to the Emergency Room. Even after 7 h of scorpion envenomation he was confused and having hallucinations. Besides he was dyspneic, tachycardic, hypotensive and got worse in overall situation due to cardiogenic pulmonary edema. These clinical findings are concordant with the Level III scorpion envenomation (major systemic manifestations). Positive inotropic agents, diuretics and antiagregant agents used on supportive therapy in his treatment. After 2 weeks he get recovered and discharged from the pediatric intensive care unit. This research is conducted by thinking emergency physicians should learn that Leiurus abdullahbayrami envenomation can cause scorpion-related cardiomyopathy and acute pulmonary edema especially in children.