Latest Articles from Arthropod Systematics & Phylogeny Latest 2 Articles from Arthropod Systematics & Phylogeny https://arthropod-systematics.arphahub.com/ Thu, 28 Mar 2024 19:54:41 +0200 Pensoft FeedCreator https://arthropod-systematics.arphahub.com/i/logo.jpg Latest Articles from Arthropod Systematics & Phylogeny https://arthropod-systematics.arphahub.com/ The first molecular insight into the genus Turanium Baeckmann, 1922 (Coleoptera: Cerambycidae: Callidiini) with a description of a new species from Middle Asia https://arthropod-systematics.arphahub.com/article/65325/ Arthropod Systematics & Phylogeny 79: 465-484

DOI: 10.3897/asp.79.e65325

Authors: Lech Karpiński, Wojciech T. Szczepański, Radosław Plewa, Lech Kruszelnicki, Katarzyna Koszela, Jacek Hilszczanski

Abstract: This paper sheds the first light on the phylogeny of the Central Asian genus Turanium Baeckmann, 1922. By applying an integrative taxonomy approach, we revealed and described a new species from Kyrgyzstan—Turanium losi Karpiński, Plewa & Hilszczański sp. nov. Distinguishing characters from closely related Turanium pilosum (Reitter, 1891) are presented and their ecological associations are discussed. The key characters, including the male terminalia, were examined by means of scanning electron microscopy. High-quality stacked photographs of the habitus of the specimens are presented for both species and their geographical distributions are mapped. While the new species shows stable morphological characters that allow its differentiation from T. pilosum and the COI genetic distance between them is approx. 3%, the different species delimitation methods gave discordant results. Although the new species remained unrecognized for so long, it seems that these cerambycids are common in the region and both can be considered potentially invasive as they are apparently highly polyphagous. It has also been documented that they occur sympatrically in Kyrgyzstan. Both the Bayesian and maximum likelihood analyses of COI sequences confirmed the monophyly of the genus Turanium with strong support (PP 1 and BS 90, respectively). Moreover, the recently revealed polyphyly of the tribe Callidiini was supported by our analyses and, consequently, the discussion on the establishment of a new tribe Ropalopini is raised. This study further corroborates the effectiveness of DNA barcoding as a tool in detecting new species and provides some of the first sequences for Central Asian cerambycids, which remain almost completely unknown in terms of molecular studies.

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Research Article Thu, 7 Oct 2021 15:15:16 +0300
A fine line between species and ecotype: a case study of Anoplistes halodendri and A. kozlovi (Coleoptera: Cerambycidae) occurring sympatrically in Mongolia https://arthropod-systematics.arphahub.com/article/61499/ Arthropod Systematics & Phylogeny 79: 1-23

DOI: 10.3897/asp.79.e61499

Authors: Lech Karpiński, Patrick Gorring, Lech Kruszelnicki, Denis G. Kasatkin, Wojciech T. Szczepański

Abstract: This paper discusses ecological adaptation based on a case study of Anoplistes halodendri and Anoplistes kozlovi (Coleoptera: Cerambycidae) that occur in the arid zone of Mongolia. By applying an integrative taxonomy approach, we revealed one of the first documented cases of sympatrically occurring ecotypes in Polyphaga and the second case of ecotypes in the family Cerambycidae. The results of the analysis of the ecological data, molecular analysis of mitochondrial (COI) and nuclear (ArgK and CAD) genes, as well as a detailed morphological examination, which consisted of a study on the male genitalia including the endophallic structures, supported the hypothesis that these two entities, which are commonly considered separate species, represent only ecologically adapted forms that are associated with rocky hills and sandy/gravelly plains, respectively. Therefore, a synonym is restored: Anoplistes halodendri minutus Hammarström, 1892 = Asias kozlovi Semenov and Znojko, 1934, syn. res. The differences in the elytral pattern and shade appear to be adapted to the different substrates in these distinct habitats. A probable scenario assumes that these two forms arose in parapatry, independently in multiple populations, under parallel speciation during the intensification of the aridification across the region in the period during which the Gobi Desert was formed (~ 24 to 2.6 Ma) and they may evolve into separate species in the future. The phylogenetic relationships of some taxa representing the most closely related genera of the tribe Trachyderini were analysed and the questioned species status of Anoplistes jacobsoni was confirmed. Low interspecific differences in the endophallic structures in the genus Anoplistes and between some species of the genus Amarysius indicate that they are evolutionarily relatively young groups. The practical differences between ecotype and subspecies are also discussed.

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Research Article Fri, 16 Apr 2021 18:12:22 +0300