First fossil species of family Hyidae (Arachnida: Pseudoscorpiones) confirms 99 million years of ecological stasis in a Gondwanan lineage.

Autor:	Röschmann LM; Department of Geology, Universität Hamburg, Hamburg, Germany.; Section Arachnology, Centre for Taxonomy and Morphology, Museum of Nature Hamburg-Zoology, Leibniz Institute for the Analysis of Biodiversity Change, Hamburg, Germany., Harvey MS; Collections & Research, Western Australian Museum, Welshpool, Australia., Hou Y; College of Life Sciences, Capital Normal University, Beijing, China., Harms D; Section Arachnology, Centre for Taxonomy and Morphology, Museum of Nature Hamburg-Zoology, Leibniz Institute for the Analysis of Biodiversity Change, Hamburg, Germany., Kotthoff U; Centre for Biomonitoring and Conservation Science, Museum of Nature Hamburg-Geology, Leibniz Institute for the Analysis of Biodiversity Change, Hamburg, Germany., Hammel JU; Institute of Materials Physics, Helmholtz-Zentrum Hereon, Geesthacht, Germany., Ren D; College of Life Sciences, Capital Normal University, Beijing, China., Loria SF; Section Arachnology, Centre for Taxonomy and Morphology, Museum of Nature Hamburg-Zoology, Leibniz Institute for the Analysis of Biodiversity Change, Hamburg, Germany.
Jazyk:	angličtina
Zdroj:	PeerJ [PeerJ] 2024 Jun 26; Vol. 12, pp. e17515. Date of Electronic Publication: 2024 Jun 26 (Print Publication: 2024).
DOI:	10.7717/peerj.17515
Abstrakt:	Burmese amber preserves a diverse assemblage of Cretaceous arachnids, and among pseudoscorpions (Arachnida: Pseudoscorpiones), ten species in five families have already been named. Here, we describe a new fossil species from Burmese amber in the pseudoscorpion family Hyidae, providing detailed measurements, photographs and 3D-models from synchrotron scanning. Based on morphology, the new fossil, Hya fynni sp. nov. is placed in the genus Hya , and is nearly identical to extant species in the genus, except for the position of trichobothrium est on the pedipalpal chela, thereby indicating extreme morphological stasis in this invertebrate lineage over the last 99 million years. Hya fynni represents the first described fossil species in Hyidae, and the third described Burmese fossil in the superfamily Neobisioidea. It also joins the garypinid, Amblyolpium burmiticum , in representing the oldest fossil records for extant pseudoscorpion genera. Considering proposed divergence dates, the newly described fossil species bolsters a Gondwanan origin for Hyidae, and provides evidence for the " Late Jurassic Rifting " hypothesis for the Burma Terrane, in which this landmass rifted from Gondwana in the Late Jurassic and collided with Eurasia by the Cretaceous/Eocene. Like Hya species today, H. fynni likely inhabited humicolous microhabitats in tropical forests on the Burma Terrane, supporting ecological niche stasis for this family since the Mesozoic. Competing Interests: The authors declare that they have no competing interests. (© 2024 Röschmann et al.)
Databáze:	MEDLINE
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