Diversity and phylogeny of the extinct wasp subfamily Lancepyrinae (Hymenoptera, Bethylidae) revealed by mid-Cretaceous Burmese amber

• Published in: Arthropod Systematics & Phylogeny
• Main Authors: Brazidec, Manuel, Legendre, Frédéric, Perrichot, Vincent
• Other Authors: Géosciences Rennes (GR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS), State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology (NIGPAS-CAS), Chinese Academy of Sciences Nanjing Branch -Chinese Academy of Sciences Nanjing Branch, Institut de Systématique, Evolution, Biodiversité (ISYEB ), Muséum national d'Histoire naturelle (MNHN)-École Pratique des Hautes Études (EPHE), Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2023
• Subjects: Chrysidoidea; Bethylidae; fossil record; taxonomy; Kachin amber; Hkamti amber; Chrysidoidea Bethylidae fossil record taxonomy Kachin amber Hkamti amber; [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology; Taimyr
• Online Access: https://insu.hal.science/insu-04059196; https://insu.hal.science/insu-04059196/document; https://insu.hal.science/insu-04059196/file/ASP_article_96737_en_1.pdf; https://doi.org/10.3897/asp.81.e96737

International audience The Lancepyrinae are an extinct subfamily of Bethylidae known exclusively from Cretaceous amber deposits of Lebanon, Spain, Taimyr and Myanmar. In this study, we describe and illustrate four new genera and five new species of lancepyrine wasps from the Albian of Hkamti and late Albian-early Cenomanian of Kachin (Myanmar): Azepyris delamarrei gen. et sp. nov. , Burmapyris ohmkuhnlei sp. nov. , Gwesped groehni gen. et sp. nov. , Paralanceis chotardi gen. et sp. nov. and Yunbayin rossei gen. et sp. nov. These taxa not only highlight the taxonomic diversity of the Lancepyrinae during the mid-Cretaceous but they also reveal the morphological disparity of the subfamily. To establish the phylogenetic relationships of these fossils and to check the monophyly of the Lancepyrinae, we add them to a pre-existing morphological matrix and perform a cladistic analysis. We retrieve the subfamily as poorly supported yet monophyletic, with the newly described taxa deeply nested in it. A key to the genera of Lancepyrinae is provided. Finally, we erect the subfamily Cretabythinae subfam. nov. for the genera Cretabythus Evans, 1973, Holopsenelliscus Engel, 2019 and Megalopsenella Jouault et al., 2020 as no taxonomic treatment has been provided for these taxa after the transfer of Holopsenella Engel et al., 2016 as Aculeata incertae sedis .