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An integrative approach in the assessment of species delimitation and structure of the Merodon nanus species group (Diptera: Syrphidae)
Authors:Nataša Kočiš Tubić  Gunilla Ståhls  Jelena Ačanski  Mihajla Djan  Dragana Obreht Vidaković  Rüstem Hayat  Samad Khaghaninia  Ante Vujić  Snežana Radenković
Affiliation:1.Department of Biology and Ecology, Faculty of Sciences,University of Novi Sad,Novi Sad,Serbia;2.Zoology Unit,Finnish Museum of Natural History, University of Helsinki,Helsinki,Finland;3.BioSense Institute - Research Institute for Information Technologies in Biosystems,University of Novi Sad,Novi Sad,Serbia;4.Department of Forest and Conservation Sciences,University of British Columbia,Vancouver,Canada;5.Isparta,Turkey;6.Department of Plant Protection,University of Tabriz,Tabriz,Iran
Abstract:The Merodon nanus group (Diptera, Syrphidae) is a small group of closely related species with high morphological similarity. Until now, based on morphological characters, this group consisted of five species: M. nanus Sack, 1931; M. telmateia Hurkmans, 1987; M. kopensis Vuji? et Hayat, 2015; M. neonanus Vuji? et Taylor, 2015; and M. rasicus Vuji? et Radenkovi?, 2015. Here, using an integrative approach based on molecular characters (sequences of the D2–3 region of the nuclear 28S rRNA gene and the mitochondrial COI gene) and data obtained from geometric morphometry of wing shape, we distinguish all five previously morphologically defined species of the group. Additionally, we identify one species as being new to science, M. vladimiri Vuji? et Ko?i? Tubi? sp. n. We emphasize the separation of this newly described species according to the sequences obtained from the slowly evolving 28S rRNA gene, which demonstrated four to five mutation positions between this species and morphologically the most similar M. neonanus species. Also, our results show a clear division of M. telmateia into at least three population groups that we designate as the subspecies: M. telmateia mediterraneus A?anski et Ko?i? Tubi? subsp. n. and M. telmateia samosensis A?anski et Ko?i? Tubi? subsp. n. exhibiting western distributions (western Anatolia and the Greek island of Samos, respectively) and the nominative subspecies M. telmateia telmateia with an eastern Anatolian distribution.
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