New species of Lechytia Balzan, 1892 (Arachnida: Pseudoscorpiones) from Burmese amber highlights 99 million years of morphological stasis

IF 1.9 3区地球科学 Q1 GEOLOGY

Cretaceous Research Pub Date : 2025-03-10 DOI:10.1016/j.cretres.2025.106120

Maya Hagen , Ulrich Kotthoff , Danilo Harms , Stephanie F. Loria

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引用次数: 0

Abstract

The pseudoscorpion genus Lechytia Balzan, 1892 (Chthoniidae Daday, 1889: Lechytiinae Chamberlin, 1929) includes 27 extant species that are distributed across all continents except Antarctica, and a single extinct species from Dominican amber of Miocene age. We document the first record of Lechytia from Burmese amber (Cenomanian: ∼99 Ma), Lechytia finniae sp. nov., making it the oldest fossil record for Lechytia and extending the known temporal range of this group by more than 70 million years into the Mesozoic. The new species differs from most extant Lechytia species due to the distance between trichobothria sb and b that are separated by at least one areolar diameter, and by the absence of eyes. Since there is a close morphological resemblance between L. finniae sp. nov. and extant Lechytia species, the new fossil is placed in an extant genus and represents yet another example of morphological stasis in pseudoscorpions. The presence of Lechytia in Burmese amber implies that this genus was present on the Burma Terrane in the Cretaceous although no extant species are known from this landmass today. The ecology of extant species may lend support to a tropical forest environment on the Burma Terrane.

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缅甸琥珀中的 Lechytia Balzan, 1892（蛛形纲：伪蝎属）新种凸显了 9,900 万年的形态停滞期

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来源期刊

Cretaceous Research 地学-地质学

CiteScore

4.10

自引率

19.00%

发文量

235

审稿时长

12 weeks

期刊介绍： Cretaceous Research provides a forum for the rapid publication of research on all aspects of the Cretaceous Period, including its boundaries with the Jurassic and Palaeogene. Authoritative papers reporting detailed investigations of Cretaceous stratigraphy and palaeontology, studies of regional geology, and reviews of recently published books are complemented by short communications of significant new findings. Papers submitted to Cretaceous Research should place the research in a broad context, with emphasis placed towards our better understanding of the Cretaceous, that are therefore of interest to the diverse, international readership of the journal. Full length papers that focus solely on a local theme or area will not be accepted for publication; authors of short communications are encouraged to discuss how their findings are of relevance to the Cretaceous on a broad scale. Research Areas include: • Regional geology • Stratigraphy and palaeontology • Palaeobiology • Palaeobiogeography • Palaeoceanography • Palaeoclimatology • Evolutionary Palaeoecology • Geochronology • Global events.