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    A new species of Euscorpius Thorell, 1876 (Scorpiones, Euscorpiidae) from Turkey
    (Pensoft Publishers, 2012) Tropea, Gioele; Yagmur, Ersen Aydin; Koc, Halil; Yesilyurt, Fatih; Rossi, Andrea
    A new species of the genus Euscorpius Thorell, 1876 is described based on specimens collected from Dilek Peninsula (Davutlar, Aydin) in Turkey. It is characterized by an oligotrichous trichobothrial pattern (Pv= 7, et= 5/6, eb= 4) and small size. Euscorpius (Euscorpius) avcii sp. n. is the first named species of the subgenus Euscorpius from Turkey.
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    A new species of Zachaeus CL Koch from Turkey (Opiliones, Phalangiidae)
    (Pensoft Publ, 2015) Kurt, Kemal; Koc, Halil; Yagmur, Ersen Aydin
    A new species of harvestmen, Zachaeus seyyari sp. n. (Opiliones, Phalangiidae), is described and illustrated on the basis of both sexes from Sirnak Province in Turkey. Differences between the new species and related species are indicated. Photographs of its characteristic structures are also provided.
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    Genetic diversity within Scorpio maurus (Scorpiones: Scorpionidae) from Turkey
    (Univ Oradea Publ House, 2017) Koc, Halil; Sipahi, Hulya; Yagmur, Ersen Aydin
    In this study, DNA sequence diversity of the mitochondrial (mt) cytochrome oxidase 1 (CO1) gene was investigated in Scorpio maurus specimens from across southeastern Turkey. Nucleotide sequences included 508 conserved sites and 126 variable sites, and the mean nucleotide variation within species was 7.9%. Intraspecific pairwise divergences ranged from 0.5% to 10.7%. Phylogenetic analysis indicated high divergence among specimens. This study is the first mtDNA sequence analysis for Turkish scorpions.
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    Karyotypes of Southeastern Turkish Scorpions Hottentotta saulcyi and Buthacus macrocentrus (Scorpiones: Buthidae)
    (Istanbul University Press, 2019) Koc, Halil; Yagmur, Ersen Aydin; Šťáhlavský, Frantisek
    Objective: The species Hottentotta saulcyi is widely distributed from Mardin to Hakkari while the distribution of Buthacus macrocentrus is limited to the south-east of Turkey (only Şanlıurfa). The aim of this study is to analyze the cytogenetic structure of Hottentotta saulcyi and Buthacus macrocentrus. Materials and Methods: The specimens were collected during the night from Şırnak and Şanlıurfa using a UV lamp. The male Hottentotta saulcyi were collected from Şırnak and male and female Buthacus macrocentrus from Şanlıurfa. Chromosome preparations were made using cells from the male testes and the female ovariuteri of the species studied. Chromosome preparations were made using the classical spreading method. Results: The diploid chromosome number for Hottentotta saulcyi was 2n=14, and 2n=28 for Buthacus macrocentrus. Conclusion: The karyotypes of Hottentotta saulcyi and Buthacus macrocentrus have been presented for the first time. Both analyzed species have holocentric chromosomes that gradually decrease in size. Quadrivalent and hexavalent were observed during the first meiotic division in males of Buthacus macrocentrus. © Copyright 2019 by The Istanbul University Faculty of Science.
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    Molecular cytogenetics of Androctonus scorpions: an oasis of calm in the turbulent karyotype evolution of the diverse family Buthidae
    (Oxford Univ Press, 2015) Sadilek, David; Nguyen, Petr; Koc, Halil; Kovarik, Frantisek; Yagmur, Ersen Aydin; Stahlavsky, Frantisek
    Recent cytogenetic and genomic studies suggest that morphological and molecular evolution is decoupled in the basal arachnid order Scorpiones. Extraordinary karyotype variation has been observed particularly in the family Buthidae, which is unique among scorpions for its holokinetic chromosomes. We analyzed the karyotypes of four geographically distant species of the genus AndroctonusEhrenberg, 1828 (Androctonus australis, Androctonus bourdoni, Androctonus crassicauda, Androctonus maelfaiti) (Scorpiones: Buthidae) using both classic and molecular cytogenetic methods. The mitotic complement of all species consisted of 2n=24 elements. Fluorescence in situ hybridization with a fragment of the 18S ribosomal RNA gene, a cytogenetic marker well known for its mobility, identified a single interstitial rDNA locus on the largest chromosome pair in all species examined. Our findings thus support the evolutionary stasis of the Androctonus karyotype, which is discussed with respect to current hypotheses on chromosome evolution both within and beyond the family Buthidae. Differences in karyotype dynamics between Androctonus spp. and the other buthids can help us better understand the driving forces behind their chromosome evolution and speciation.(c) 2015 The Linnean Society of London, Biological Journal of the Linnean Society, 2015, 115, 69-76.
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    The first chromosome study of the genera Calchas Birula, 1899 and Neocalchas Yagmur, Soleglad, Fet & Kovarik, 2013 (Scorpiones: Iuridae)
    (Taylor & Francis Ltd, 2023) Yagmur, Ersen Aydin; Koc, Halil; Yesilyurt, Fatih; Stahlavsky, Frantisek
    The chromosomes of two species belonging to the scorpion family Iuridae are studied for the first time. Both analysed species displayed achiasmatic meiosis and no morphologically differentiated sex chromosomes; these features are typical for all scorpions. Both species possessed monocentric chromosomes, a characteristic specific to the entire parvorder Iurida. The karyotype of Calchas nordmanni Birula, 1899 is composed of 82 chromosomes, and the diploid number of chromosomes in Neocalchas gruberi is 40. Despite this conspicuous difference in 2n chromosome morphology is mainly acrocentric. Both species possess two pairs of the 18S rDNA clusters identified by FISH. A higher number of rDNA loci may represent an ancestral state for the parvorder Iurida.
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    The first record of karyotypes in Leiurus abdullahbayrami and Compsobuthus matthiesseni (Scorpiones: Buthidae) from Turkey
    (Univ Oradea Publ House, 2014) Stahlavsky, Frantisek; Koc, Halil; Yagmur, Ersen Aydin
    The karyotypes of Leiurus abdullahbayrami Yagmur, Koc & Kunt, 2009 and Compsobuthus matthiesseni (Birula, 1905) from Turkey are presented for the first time. Both analyzed species have achiasmatic meiosis and the same number of holocentric chromosomes (2n=22) gradually decreasing in size. During the first meiotic division we observed tetravalent in one male of L. abdullahbayrann and octovalent in one male of C. matthiesseni. These types of multivalents may increase genetic variability and indicate reciprocal translocations within these species.
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    THE TYPE LOCALITY OF RHAGODES CAUCASICUS BIRULA, 1905, AND THE FIRST RECORD OF THE SPECIES FROM IRAN WITH REDESCRIPTION OF THE SPECIES FROM TURKEY (SOLIFUGAE: RHAGODIDAE)
    (Amer Entomol Soc, 2015) Koc, Halil; Moradi, Mohammed; Erdek, Melek; Yagmur, Ersen Aydin; Gharahkloo, Pooyan Moradi
    The type locality of Rhagodes caucasicus Birula, 1905 is corrected and identified as Tuzluca (Kul'p), Igdir Province, eastern Turkey instead of Armenia. A new record for the Iranian solpugid fauna is also reported: Rhagodes caucasicus Birula, 1905 from Zanjan Province, northwestern Iran. The redescription of new material of Rhagodes caucasicus from Turkey is included.
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    TWO NEW RECORDS FOR TURKISH HARVESTMEN FAUNA (ARACHNIDA: OPILIONES)
    (Amer Entomol Soc, 2015) Kurt, Kemal; Koc, Halil; Yagmur, Ersen Aydin
    Two harvestmen species, Mediostoma haasi (Roewer, 1953) and Phalangium armatum Snegovaya, 2005, are recorded in Turkey for the first time. Their description, characteristic features, distributions, measurements and photographs of genitalia and general habitus of both sexes are presented.