A winged relative of ice-crawlers in amber bridges the cryptic extant Xenonomia and a rich fossil record
© 2024 Institute of Zoology, Chinese Academy of Sciences..
Until the advent of phylogenomics, the atypical morphology of extant representatives of the insect orders Grylloblattodea (ice-crawlers) and Mantophasmatodea (gladiators) had confounding effects on efforts to resolve their placement within Polyneoptera. This recent research has unequivocally shown that these species-poor groups are closely related and form the clade Xenonomia. Nonetheless, divergence dates of these groups remain poorly constrained, and their evolutionary history debated, as the few well-identified fossils, characterized by a suite of morphological features similar to that of extant forms, are comparatively young. Notably, the extant forms of both groups are wingless, whereas most of the pre-Cretaceous insect fossil record is composed of winged insects, which represents a major shortcoming of the taxonomy. Here, we present new specimens embedded in mid-Cretaceous amber from Myanmar and belonging to the recently described species Aristovia daniili. The abundant material and pristine preservation allowed a detailed documentation of the morphology of the species, including critical head features. Combined with a morphological data set encompassing all Polyneoptera, these new data unequivocally demonstrate that A. daniili is a winged stem Grylloblattodea. This discovery demonstrates that winglessness was acquired independently in Grylloblattodea and Mantophasmatodea. Concurrently, wing apomorphic traits shared by the new fossil and earlier fossils demonstrate that a large subset of the former "Protorthoptera" assemblage, representing a third of all known insect species in some Permian localities, are genuine representatives of Xenonomia. Data from the fossil record depict a distinctive evolutionary trajectory, with the group being both highly diverse and abundant during the Permian but experiencing a severe decline from the Triassic onwards.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - year:2024 |
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| Enthalten in: |
Insect science - (2024) vom: 07. März |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Cui, Yingying [VerfasserIn] |
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| Links: |
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| Themen: |
Grylloblattodea |
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| Anmerkungen: |
Date Revised 08.03.2024 published: Print-Electronic Citation Status Publisher |
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| doi: |
10.1111/1744-7917.13338 |
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| PPN (Katalog-ID): |
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| 245 | 1 | 2 | |a A winged relative of ice-crawlers in amber bridges the cryptic extant Xenonomia and a rich fossil record |
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| 520 | |a Until the advent of phylogenomics, the atypical morphology of extant representatives of the insect orders Grylloblattodea (ice-crawlers) and Mantophasmatodea (gladiators) had confounding effects on efforts to resolve their placement within Polyneoptera. This recent research has unequivocally shown that these species-poor groups are closely related and form the clade Xenonomia. Nonetheless, divergence dates of these groups remain poorly constrained, and their evolutionary history debated, as the few well-identified fossils, characterized by a suite of morphological features similar to that of extant forms, are comparatively young. Notably, the extant forms of both groups are wingless, whereas most of the pre-Cretaceous insect fossil record is composed of winged insects, which represents a major shortcoming of the taxonomy. Here, we present new specimens embedded in mid-Cretaceous amber from Myanmar and belonging to the recently described species Aristovia daniili. The abundant material and pristine preservation allowed a detailed documentation of the morphology of the species, including critical head features. Combined with a morphological data set encompassing all Polyneoptera, these new data unequivocally demonstrate that A. daniili is a winged stem Grylloblattodea. This discovery demonstrates that winglessness was acquired independently in Grylloblattodea and Mantophasmatodea. Concurrently, wing apomorphic traits shared by the new fossil and earlier fossils demonstrate that a large subset of the former "Protorthoptera" assemblage, representing a third of all known insect species in some Permian localities, are genuine representatives of Xenonomia. Data from the fossil record depict a distinctive evolutionary trajectory, with the group being both highly diverse and abundant during the Permian but experiencing a severe decline from the Triassic onwards | ||
| 650 | 4 | |a Journal Article | |
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| 700 | 1 | |a Bardin, Jérémie |e verfasserin |4 aut | |
| 700 | 1 | |a Wipfler, Benjamin |e verfasserin |4 aut | |
| 700 | 1 | |a Demers-Potvin, Alexandre |e verfasserin |4 aut | |
| 700 | 1 | |a Bai, Ming |e verfasserin |4 aut | |
| 700 | 1 | |a Tong, Yi-Jie |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Grace Nuoxi |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Huarong |e verfasserin |4 aut | |
| 700 | 1 | |a Zhao, Zhen-Ya |e verfasserin |4 aut | |
| 700 | 1 | |a Ren, Dong |e verfasserin |4 aut | |
| 700 | 1 | |a Béthoux, Olivier |e verfasserin |4 aut | |
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