Epimetodae科(鞘翅目:水生总科):Eupotemus的现有知识、属级系统发育和分类学修订综述

IF 0.9 4区 农林科学 Q3 ENTOMOLOGY
M. Fikáček, Keita Matsumoto, P. Perkins, A. Prokin, A. Sazhnev, S. V. Litovkin, M. Jäch
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引用次数: 6

摘要

Epimetopidae是水生总科的一个小甲虫科,包括3属72种:美洲Epimetopus Lacordaire(1854年)(56种),亚洲Eumetopus Balfour-Browne(1949年)(8种)和非洲Eupotemus Ji & Jäch(1998年)(8种,其中6种为新描述)。在这项研究中,我们说明和比较了这三个属的成年形态,并产生了首个DNA序列的Eumetopus和Eupotemus。利用4个基因(cox1、16S、18S和28S)的形态数据和序列重建属间系统发育关系。两者都强有力地支持Epimetopidae的单一性,揭示了Eumetopus是最早分化的分类单元,Epimetopus + Eupotemus是一个强有力地支持具有众多突触的分支。Epimetopus和Eupotemus的相互单系性在DNA数据上得到了强有力的支持,但在形态分析上却没有得到证实。尽管真足纲是最早的分支分支,但其特征是许多独特的衍生结构,例如雄性精子泵的存在(在嗜水纲中是独特的)。现有的epimettopidae生物学数据表明,大多数物种栖息在溪流或河流的沙质至泥泞的边缘。所有三属的雌性都携带卵壳;因此,epimettopidae是三种独立的亲水动物谱系之一,在这些谱系中进化出了这种行为。幼虫只以Epimetopus为人所知,其特征是形态适应通过穿刺和吸吮,封闭的气管系统和腹部鳃进食;长尾龙和长尾龙的幼虫尚不清楚,需要进一步的研究来证实它们是否表现出与长尾龙相同的适应性。修订了非洲真足鼠属的分类,新增6种:E. bilobatus sp. 11 .(尼日利亚)、E. cameroonensis sp. 11 .(喀麦隆)、E. ophioglossus sp. 11 .(加蓬、多哥)、E. smithi sp. 11 . (Côte科特迪瓦)、E. taianus sp. 11 . (Côte科特迪瓦)和E. uluguru sp. 11 .(坦桑尼亚)。根据ICZN(1999:第70.3条),1967年的Eupotemus limicola del被确定为该属的模式种。提供了Eumetopus的新记录(E. acutimontis Ji & Jäch, 1998年来自越南,E. bullatus (Sharp, 1875年)来自印度马哈拉施特拉邦,E. fl avidulus (Sharp, 1890年)来自印度马哈拉施特拉邦和安得拉邦,E. maindroni (r gimbart, 1903年)来自印度马哈拉施特拉邦和古吉拉特邦,E. weigeli Skale & Jäch, 2003年来自印度北阿肯德邦)。图解了所有物种的习性。提供Epimetopus物种的更新清单和记录接受时间:2021年1月10日在线发布时间:2021年2月3日
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The family Epimetopidae (Coleoptera: Hydrophiloidea): review of current knowledge, genus-level phylogeny, and taxonomic revision of Eupotemus
Epimetopidae are a small beetle family of the superfamily Hydrophiloidea, comprising 72 described species in three genera: the American Epimetopus Lacordaire, 1854 (56 species), Asian Eumetopus Balfour-Browne, 1949 (eight species) and African Eupotemus Ji & Jäch, 1998 (eight species, of which six are described as new here). In this study we illustrate and compare the adult morphology of all three genera and generate the fi rst DNA sequences for Eumetopus and Eupotemus. The morphological data and sequences of four genes (cox1, 16S, 18S and 28S) are used to reconstruct phylogenetic relationships among genera. Both strongly support the monophyly of Epimetopidae, reveal Eumetopus as the earliest diverging taxon and Epimetopus + Eupotemus as a strongly supported clade with numerous synapomorphies. The reciprocal monophyly of Epimetopus and Eupotemus is strongly supported by DNA data but not in the morphological analysis which reveals Epimetopus paraphyletic. Eumetopus, despite being the earliest branching clade, is characterized by many unique derived structures, e.g. by the presence of the sperm pump in males (unique in Hydrophiloidea). The available data on the biology of Epimetopidae indicate that most species inhabit sandy to muddy margins of streams or rivers. Females of all three genera carry egg cases; Epimetopidae hence are one of three independent lineages of Hydrophiloidea in which this behavior evolved. Larvae are only known for Epimetopus and are characterized by morphological adaptations for feeding by piercing and sucking, a closed tracheal system and abdominal gills; larvae of Eumetopus and Eupotemus remain unknown and further research is needed to confi rm whether they show the same adaptations as Epimetopus. The taxonomy of the African genus Eupotemus is revised, with six species described as new: E. bilobatus sp. nov. (Nigeria), E. cameroonensis sp. nov. (Cameroon), E. ophioglossus sp. nov. (Gabon, Togo), E. smithi sp. nov. (Côte d’Ivoire), E. taianus sp. nov. (Côte d’Ivoire) and E. uluguru sp. nov. (Tanzania). Eupotemus limicola Delève, 1967 is fi xed as the type species of the genus according to ICZN (1999: Art. 70.3). New records of Eumetopus species are provided (E. acutimontis Ji & Jäch, 1998 from Vietnam, E. bullatus (Sharp, 1875) from India: Maharashtra, E. fl avidulus (Sharp, 1890) from India: Maharashtra and Andhra Pradesh, E. maindroni (Régimbart, 1903) from India: Maharashtra and Gujarat, and E. weigeli Skale & Jäch, 2003 from India: Uttarakhand). The habitus of all species is illustrated. An updated checklist of the Epimetopus species is provided, and records Accepted: 10th January 2021 Published online: 3rd February 2021 2021
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来源期刊
CiteScore
1.60
自引率
16.70%
发文量
15
审稿时长
6-12 weeks
期刊介绍: An open access journal publishing papers on insect systematics, morphology of adult and immature stages and/or their biology, phylogeny, large-scale catalogues, and general papers on methodology of insect systematics AEMNP is publishing papers on: Insect systematics, taxonomy and nomenclature; Morphology of adult and immature stages and/or their biology with possible applications in taxonomy and phylogeny; Phylogeny at least partly based on morphological characters (or with morphological characters mapped on the tree); Catalogues applicable for further taxonomy and biodiversity studies; General papers on methodology of insect taxonomy.
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