| Title: | Osmooka, a new spider genus from Madagascar : a surprising relative of the Australian fauna (Araneae: Paraplectanoididae) |
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| Authors: | ID Kuntner, Matjaž (Author)
ID Yu, Kuang-Ping (Author)
ID Bedjanič, Matjaž (Author)
ID Gregorič, Matjaž (Author)
ID Turk, Eva (Author)
ID Čandek, Klemen (Author)
ID Coddington, Jonathan A. (Author)
ID Agnarsson, Ingi (Author)
ID Starrett, James (Author)
ID Bond, Jason E. (Author) |
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| Files: |  URL - Source URL, visit https://www.nib.si/aktualno/novice/1971-znanstveniki-odkrili-nov-rod-in-vrsto-pajkov-na-madagaskarju-kar-spreminja-razumevanje-evolucije-pajkov
URL - Source URL, visit https://doi.org/10.1093/isd/ixaf050
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MD5: 07D48FA679CEA6938A261ADE40A17458
This document has even more files. Complete list of files is available
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  NIB - National Institute of Biology
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| Abstract: | Madagascar is a biodiversity hotspot with high endemism and ancient phylogenetic diversity. We here report the discovery of Osmooka aphana gen. nov., sp. nov. from Marojejy National Park. Phylogenomic analyses place Osmooka as sister to the Australian Paraplectanoides Keyserling, 1886 and this doublet is sister to Nephilidae Simon, 1894. When proposed, Paraplectanoididae Kuntner, Coddington, Agnarsson & Bond, 2023 was exclusively Australian and monogeneric, but was predicted to contain additional, undescribed taxa. The discovery of Osmooka and its phylogenetic placement in Paraplectanoididae support this prediction. We present a taxonomic treatment of Osmooka and Paraplectanoides, and a reappraisal of Orbipurae morphological homologies. With this new discovery, we revalidate Paraplectanoididae, Nephilidae, and Phonognathidae Simon, 1894 ranks resurrected as exclusive, monophyletic, and well-diagnosed families, whereas Araneidae Clerck, 1757 requires further redefinition. Finally, we test the hypothesis of East Gondwanan vicariant origin of Osmooka and Paraplectanoides. This scenario would predict an ancient age of their ancestor, predating the 130 Ma breakup of Gondwana. Divergence dating refutes this hypothesis by estimating their common ancestor at 57 Ma. Rather than through vicariance, the disjunct distribution of Osmooka and Paraplectanoides is best explained through Cenozoic intercontinental dispersal and/or extinctions. Potential discovery of additional paraplectanoidid diversity might better elucidate the timing, modes, and trajectories of historic dispersal and extinction events. |
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| Keywords: | phylogenomics, classification, palpal homology, arachnology, zoology |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 05.12.2025 |
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| Year of publishing: | 2025 |
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| Number of pages: | str. 1-26 |
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| Numbering: | Vol. 9, iss. 6 |
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| PID: | 20.500.12556/DiRROS-25544  |
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| UDC: | 575.8 |
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| ISSN on article: | 2399-3421 |
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| DOI: | 10.1093/isd/ixaf050 |
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| COBISS.SI-ID: | 262724099 |
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| Note: | Ostali avtorji: Kuang-Ping Yu, Matjaž Bedjanič, Matjaž Gregorič, Eva Turk, Klemen Čandek, Jonathan A Coddington, Ingi Agnarsson, James Starrett, Jason E Bond;
Nasl. z nasl. zaslona;
Opis vira z dne 23. 12. 2025;
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| Publication date in DiRROS: | 22.01.2026 |
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| Views: | 131 |
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| Downloads: | 79 |
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