大量白垩纪化石为小丑甲虫(鞘翅目:紫菀科)的触角保护进化提供了启示

IF 3 2区 生物学 Q1 ZOOLOGY
Jan Simon-Pražák, Shûhei Yamamoto, Tomáš Lackner, Martin Fikáček, Jakub Prokop, Michael S Caterino
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引用次数: 0

摘要

甲虫科的物种表现出许多防御适应性,从一般紧凑的球形体型到可伸缩的跗节、腿、头和触角。触角的隐藏方式尤其多变,突出了保护这些重要感官结构的重要性。由于对该科的基干系统发育以及相应的生态位利用和形态演化模式了解甚少,阻碍了对这些形态特征演化的了解。白垩纪琥珀化石的大量发现填补了该科爆发性辐射时期的重要形态空白。在这里,我们描述了白垩纪缅甸琥珀中的 10 个新物种,其中 6 个代表新属:(Abraeinae); Pseudacritus extinctus gen.(Dendrophilinae: Paromalini); Prodigister tricostatus gen.包括这些类群在内的经过修订的系统发育分析支持了之前的暗示,即在白垩纪期间,inquilinous形式是普遍和多样的。这些结果还支持这样一种观点,即在这些环境中,保护至关重要的感官器官--触角的压力很大,从而促使现生类群中两种保护性较强的构造有多种起源。一些新属仍未被归入亚科,这凸显了该科早期化石记录的空白,以及对现生类群的综合数据进行更全面分析的持续需求,同时我们还可以假设将继续发现更多的已灭绝类群。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A bonanza of Cretaceous fossils provides insights into the evolution of antennal protection in clown beetles (Coleoptera: Histeridae)
Species in the beetle family Histeridae exhibit numerous defensive adaptations, from a generally compact and spheroid body shape to retractable tarsi, legs, heads, and antennae. Modes of antennal concealment are particularly variable, underscoring the importance of protecting these essential sensory structures. Understanding the evolution of these morphological features has been hindered by a weak understanding of the family’s basal phylogeny, and corresponding patterns of niche-use and morphological evolution. Cretaceous amber fossils have been proliferating, filling in important morphological gaps right around the time of the family’s explosive radiation. Here we describe 10 new species from Cretaceous Burmese ambers, six of them representing new genera: Palaeabraeus glabrus gen. nov. et sp. nov. (Abraeinae); Pseudacritus extinctus gen. nov. et sp. nov. (Abraeinae); Miculissima excavata gen. nov. et sp. nov. (unplaced to subfamily); Placatister cascus gen. nov. et sp. nov. (unplaced to subfamily); Cretomalus tibiodentatus gen. nov. et sp. nov. (Dendrophilinae: Paromalini); Prodigister tricostatus gen. nov. et sp. nov. (unplaced to subfamily); Anapleus punctulatus sp. nov. (Dendrophilinae: Anapleini); Pantostictus hirsutus sp. nov. (Abraeinae: Pantostictini); Phasmister kraliceki sp. nov. (Onthophilinae); and Phasmister planatus sp. nov. (Onthophilinae). A revised phylogenetic analysis that includes these taxa supports previous hints that inquilinous forms were prevalent and diverse during the Cretaceous. These results also support the contention that pressures in these environments to protect the critically important sensory apparatus, the antenna, were strong, driving multiple origins of two of the more protective configurations among extant taxa. Some of the new genera remain unplaced to subfamily, underscoring the gaps that still remain in the early fossil record for the family, and the continued need for more comprehensive analyses of combined data from extant taxa, along with additional extinct forms that we may assume will continue to be discovered.
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来源期刊
CiteScore
6.50
自引率
10.70%
发文量
116
审稿时长
6-12 weeks
期刊介绍: The Zoological Journal of the Linnean Society publishes papers on systematic and evolutionary zoology and comparative, functional and other studies where relevant to these areas. Studies of extinct as well as living animals are included. Reviews are also published; these may be invited by the Editorial Board, but uninvited reviews may also be considered. The Zoological Journal also has a wide circulation amongst zoologists and although narrowly specialized papers are not excluded, potential authors should bear that readership in mind.
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