文章基本信息

标题：A Cretaceous bug with exaggerated antennae might be a double-edged sword in evolution
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作者：Bao-Jie Du ; Rui Chen ; Wen-Tao Tao 等
期刊名称：iScience
印刷版ISSN：2589-0042
出版年度：2021
卷号：24
期号：1
页码：1-17
DOI：10.1016/j.isci.2020.101932
语种：English
出版社：Elsevier
摘要：SummarySexual selection can favor production of exaggerated features, but the high cost of such features in terms of energy consumption and enemy avoidance makes them go to extinction under the influence of natural selection. However, fossils preserved with specialized features are very rare. Here, we report a new nymph from Burmese amber,Magnusantena wuaeDu & Chen gen. et sp. nov., which has exaggerated leaf-like expanded antennae. Such bizarre antennae indicate that sensitive and delicate sensory system and magnificent appearance in Hemiptera have been already established in mid-Cretaceous. Our findings may provide evidence for Darwin's view that sensory organs play an important role in sexual selection. This nymph with the leaf-like antennae may also represents a new camouflage pattern. However, the oversized antennae are costly to develop and maintain, increasing the risks from predators. Such unparalleled expanded antennae might be the key factor for the evolutionary fate of the coreid.Graphical AbstractDisplay OmittedHighlights•A new coreid is described from Cretaceous Burmese amber•This is the oldest bug with exaggerated leaf-like expanded antennae in Coreidae•The bizarre antennae may be associated with sexual selection and defense behavior•Coexisting with the advantages of the antennae is the huge costs of survivalPaleontology; Entomology