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Issue: Vol. 1 No. 3: September 2024
Type: Article
Published: 2024-09-26
DOI: 10.11646/mesozoic.1.3.7
Page range: 276-282
Abstract views: 107
PDF downloaded: 64

A new species of Hadraulacus Li, Shih & Ren, 2023 (Hymenoptera: Praeaulacidae) from mid-cretaceous Kachin amber

Institut de Systématique, Évolution, Biodiversité (ISYEB), MNHN, CNRS, SU, EPHE-PSL, UA, CP50, 57 rue Cuvier, F-75005 Paris, France; Institut des Sciences de l’Évolution de Montpellier (UMR 5554), Université de Montpellier, CNRS, Place Eugène Bataillon, 34095 Montpellier, France; Géosciences Rennes (UMR 6118), Université de Rennes, CNRS, F-35000 Rennes, France
State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China
Hymenoptera Praeaulacidae Cenomanian Evanioidea new taxon taxonomy

Abstract

A new praeaulacid species, Hadraulacus liae sp. nov., is described and illustrated based on a female specimen from mid-Cretaceous Kachin amber. This new species reinforces the validity of key diagnostic characters used to define the genus Hadraulacus Li, Shih & Ren, 2023, such as the absence of the 2rs-m crossvein in the forewing. However, it also demonstrates that some traits previously considered diagnostic for the genus, like the tibial spur formula (1-1-2), represent mere interspecific variation and have limited taxonomic value. While the discovery of this species adds to the known diversity of Praeaulacidae in the mid-Cretaceous Kachin amber, it also highlights that the diversity of the subfamily Praeaulacinae within this biota remains significantly underestimated.

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