| 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://datadryad.org/dataset/doi:10.5061/dryad.573n5tbkk
 ZIP - Research data, download (7,31 MB)
MD5: 71E8A8B4FE10951B78390455FA9B4B9F
URL - Similar work, visit https://doi.org/10.1093/isd/ixaf050
Description: Journal article
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| Language: | English |
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| Typology: | 2.20 - Complete scientific database of research data |
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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 supports 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: | Madagascar, biodiversity, Osmooka aphana gen. nov., sp. nov., Paraplectanoididae, spiders |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Place of publishing: | Durham |
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| Place of performance: | Durham |
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| Publisher: | Dryad |
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| Year of publishing: | 2025 |
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| Number of pages: | 1 spletni vir |
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| PID: | 20.500.12556/DiRROS-28540  |
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| UDC: | 595.44 |
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| DOI: | 10.5061/dryad.573n5tbkk |
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| COBISS.SI-ID: | 265984003 |
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| Note: | Nasl. z. nasl. zaslona;
Opis vira z dne 23. 1. 2026;
Soavtorji: Yu, Kuang-Ping; Bedjanič, Matjaž; Gregorič, Matjaž; Turk, Eva; Čandek, Klemen; Coddington, Jonathan; Agnarsson, Ingi; Starrett, James; Bond, Jason;
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| Publication date in DiRROS: | 23.03.2026 |
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| Views: | 52 |
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| Downloads: | 32 |
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| Metadata: |    |
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