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Type: Article
Published: 2023-10-30
Page range: 519–526
Abstract views: 149
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A new scolebythid-like chrysidoid genus and species (Hymenoptera: Chrysidoidea) with striking metasomal structure from the mid-Cretaceous Kachin amber

Univ. Rennes, CNRS, Géosciences Rennes, UMR 6118, F-35000, Rennes, France
Univ. Rennes, CNRS, Géosciences Rennes, UMR 6118, F-35000, Rennes, France; Institut de Systématique, Évolution, Biodiversité (ISYEB), Muséum national d’Histoire naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, F-75005, Paris, France; Institut des Sciences de l’Évolution (UMR 5554), Université de Montpellier, CNRS, F-34095, Montpellier, France
Univ. Rennes, CNRS, Géosciences Rennes, UMR 6118, F-35000, Rennes, France; Institut de Systématique, Évolution, Biodiversité (ISYEB), Muséum national d’Histoire naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, F-75005, Paris, France; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 210008, China
Hymenoptera Chrysidoidea Mesozoic Cenomanian taxonomy Myanmar fossil resin


The Cretaceous fossil record of the aculeate superfamily Chrysidoidea has been greatly enriched in the past few years, thanks especially to the abundance of available material in the late Albian-early Cenomanian amber from the Kachin state (Myanmar). We here document the discovery of a new genus and species, Thagyaminobythus martini gen. et sp. nov., from Kachin amber, emphasizing the extraordinary diversity of chrysidoid wasps in this deposit. The genus is left as incertae sedis within the superfamily because it exhibits a combination of Scolebythidae, Bethylidae and Chrysididae features. We discuss the possibility that Thagyaminobythus martini gen. et sp. nov. could retract its posterior metasomal segments and the co-occurrence of such a structure in several chrysidoid families.


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