新属的发现挑战了托克甲虫的亚种分类(鞘翅目:Tenebrionidae:Sepidiini)

IF 3.2 1区 农林科学 Q1 ENTOMOLOGY Insect Systematics and Diversity Pub Date : 2021-03-01 DOI:10.1093/isd/ixab006
Olivia M. Gearner, M. Kamiński, K. Kanda, Kali Swichtenberg, A. Smith
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引用次数: 5

摘要

Sepidiini是生活在沙漠中的暗甲虫的一个种族,它包含了许多不明确的分类群,需要在所有分类水平上进行修订。本研究基于形态学特征,在物种分布极广的沙棘属(Psammodes Kirby, 1819)(164种和亚种)和凤尾竹属(Ocnodes famatraeus, 1870)(144种和亚种)中发现了两个以前未被认识的谱系,即沙棘属(Psammodes spinosus)和凤尾竹属(Ocnodes humeralis)。为了验证其系统发育位置,利用贝叶斯和极大似然推理方法,对6个非重叠基因座(CAD、wg、COI JP、COI BC、COII和28S)的DNA序列进行了分析,重建了该部落的系统发育。上述形态学上定义的种群在Molurina + Phanerotomeina中被恢复为独特且支持良好的分支,并被解释为独立的属,分别为Tibiocnodes Gearner & Kamiński gen. 11和Tuberocnodes Gearner & Kamiński gen. 11。一个新种,Tuberocnodes synhimboides Gearner & Kamiński sp. nov.也被描述。此外,由于恢复的Tibiocnodes和Tuberocnodes的系统发育位置破坏了Molurina和Phanerotomeina的单一性,因此也对这些亚部落的可用诊断特征进行了分析。因此,Phanerotomeina被认为是新重新定义的Molurina sen11的同义词。最后,介绍了两种Molurina物种toktokus vialis (Burchell, 1822)和T. synhimboides在触底时产生的振动谱图。
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Discovery of New Genera Challenges the Subtribal Classification of Tok-Tok Beetles (Coleoptera: Tenebrionidae: Sepidiini)
Abstract Sepidiini is a speciose tribe of desert-inhabiting darkling beetles, which contains a number of poorly defined taxonomic groups and is in need of revision at all taxonomic levels. In this study, two previously unrecognized lineages were discovered, based on morphological traits, among the extremely speciose genera Psammodes Kirby, 1819 (164 species and subspecies) and Ocnodes Fåhraeus, 1870 (144 species and subspecies), namely the Psammodes spinosus species-group and Ocnodes humeralis species-group. In order to test their phylogenetic placement, a phylogeny of the tribe was reconstructed based on analyses of DNA sequences from six nonoverlapping genetic loci (CAD, wg, COI JP, COI BC, COII, and 28S) using Bayesian and maximum likelihood inference methods. The aforementioned, morphologically defined, species-groups were recovered as distinct and well-supported lineages within Molurina + Phanerotomeina and are interpreted as independent genera, respectively, Tibiocnodes Gearner & Kamiński gen. nov. and Tuberocnodes Gearner & Kamiński gen. nov. A new species, Tuberocnodes synhimboides Gearner & Kamiński sp. nov., is also described. Furthermore, as the recovered phylogenetic placement of Tibiocnodes and Tuberocnodes undermines the monophyly of Molurina and Phanerotomeina, an analysis of the available diagnostic characters for those subtribes is also performed. As a consequence, Phanerotomeina is considered as a synonym of the newly redefined Molurina sens. nov. Finally, spectrograms of vibrations produced by substrate tapping of two Molurina species, Toktokkus vialis (Burchell, 1822) and T. synhimboides, are presented.
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CiteScore
5.30
自引率
8.80%
发文量
34
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