Click beetle larvae from Cretaceous Burmese amber represent an ancient Gondwanan lineage

Abstract The click beetles (Elateridae) represent the major and well-known group of the polyphagan superfamily Elateroidea. Despite a relatively rich fossil record of Mesozoic Elateridae, only a few species are described from the Upper Cretaceous Burmese amber. Although Elateridae spend most of thei...

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Main Authors: Robin Kundrata, Simone Policena Rosa, Katerina Triskova, Gabriela Packova, Johana Hoffmannova, Jan Brus
Format: Article
Language:English
Published: Nature Portfolio 2025-01-01
Series:Scientific Reports
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Online Access:https://doi.org/10.1038/s41598-024-80950-w
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author Robin Kundrata
Simone Policena Rosa
Katerina Triskova
Gabriela Packova
Johana Hoffmannova
Jan Brus
author_facet Robin Kundrata
Simone Policena Rosa
Katerina Triskova
Gabriela Packova
Johana Hoffmannova
Jan Brus
author_sort Robin Kundrata
collection DOAJ
description Abstract The click beetles (Elateridae) represent the major and well-known group of the polyphagan superfamily Elateroidea. Despite a relatively rich fossil record of Mesozoic Elateridae, only a few species are described from the Upper Cretaceous Burmese amber. Although Elateridae spend most of their lives as larvae, our knowledge on immature stages of this family is limited, which is especially valid for the fossils. So far, only a single larval click beetle has been reported from Burmese amber. Here, we describe two larval specimens from the same deposit which based on their morphology unambiguously belong to the predominantly Southern Hemisphere subfamily Pityobiinae, being the most similar to the representatives of tribe Tibionemini. However, since the larvae of the closely related bioluminescent Campyloxenini have not yet been described, we place our specimens to Tibionemini only tentatively. One species of Pityobiinae was recently described from Burmese amber based on adults, and we discuss if it can be congeneric with the here-reported larvae. Recent representatives of the Tibionemini + Campyloxenini clade are known from South America and New Zealand, and this group is hypothesized to have a Gondwanan origin. Hence, the newly discovered Burmese amber larvae may further contribute to a recently highly debated hypothesis that biota of the resin-producing forest on the Burma Terrane, which was probably an island drifting northward at the time of amber deposition, had at least partly Gondwanan affinities. The discovery of enigmatic click beetle larvae in the Upper Cretaceous Burmese amber sheds further light on the palaeodiversity and distribution of the relatively species-poor Gondwanan clade of click beetles, which contain a recent bioluminescent lineage, as well as on the taxonomic composition of the extinct Mesozoic ecosystem.
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spelling doaj-art-cb6a0d215ecc46d29374c1c98950f9d92025-01-12T12:15:05ZengNature PortfolioScientific Reports2045-23222025-01-0115111410.1038/s41598-024-80950-wClick beetle larvae from Cretaceous Burmese amber represent an ancient Gondwanan lineageRobin Kundrata0Simone Policena Rosa1Katerina Triskova2Gabriela Packova3Johana Hoffmannova4Jan Brus5Department of Zoology, Faculty of Science, Palacky UniversityInstituto de Recursos Naturais, Universidade Federal de ItajubáDepartment of Zoology, Faculty of Science, Palacky UniversityDepartment of Zoology, Faculty of Science, Palacky UniversityDepartment of Zoology, Faculty of Science, Palacky UniversityDepartment of Geoinformatics, Faculty of Science, Palacky UniversityAbstract The click beetles (Elateridae) represent the major and well-known group of the polyphagan superfamily Elateroidea. Despite a relatively rich fossil record of Mesozoic Elateridae, only a few species are described from the Upper Cretaceous Burmese amber. Although Elateridae spend most of their lives as larvae, our knowledge on immature stages of this family is limited, which is especially valid for the fossils. So far, only a single larval click beetle has been reported from Burmese amber. Here, we describe two larval specimens from the same deposit which based on their morphology unambiguously belong to the predominantly Southern Hemisphere subfamily Pityobiinae, being the most similar to the representatives of tribe Tibionemini. However, since the larvae of the closely related bioluminescent Campyloxenini have not yet been described, we place our specimens to Tibionemini only tentatively. One species of Pityobiinae was recently described from Burmese amber based on adults, and we discuss if it can be congeneric with the here-reported larvae. Recent representatives of the Tibionemini + Campyloxenini clade are known from South America and New Zealand, and this group is hypothesized to have a Gondwanan origin. Hence, the newly discovered Burmese amber larvae may further contribute to a recently highly debated hypothesis that biota of the resin-producing forest on the Burma Terrane, which was probably an island drifting northward at the time of amber deposition, had at least partly Gondwanan affinities. The discovery of enigmatic click beetle larvae in the Upper Cretaceous Burmese amber sheds further light on the palaeodiversity and distribution of the relatively species-poor Gondwanan clade of click beetles, which contain a recent bioluminescent lineage, as well as on the taxonomic composition of the extinct Mesozoic ecosystem.https://doi.org/10.1038/s41598-024-80950-wAustraliaElateridaeDistributionFossilMorphologyPityobiinae
spellingShingle Robin Kundrata
Simone Policena Rosa
Katerina Triskova
Gabriela Packova
Johana Hoffmannova
Jan Brus
Click beetle larvae from Cretaceous Burmese amber represent an ancient Gondwanan lineage
Scientific Reports
Australia
Elateridae
Distribution
Fossil
Morphology
Pityobiinae
title Click beetle larvae from Cretaceous Burmese amber represent an ancient Gondwanan lineage
title_full Click beetle larvae from Cretaceous Burmese amber represent an ancient Gondwanan lineage
title_fullStr Click beetle larvae from Cretaceous Burmese amber represent an ancient Gondwanan lineage
title_full_unstemmed Click beetle larvae from Cretaceous Burmese amber represent an ancient Gondwanan lineage
title_short Click beetle larvae from Cretaceous Burmese amber represent an ancient Gondwanan lineage
title_sort click beetle larvae from cretaceous burmese amber represent an ancient gondwanan lineage
topic Australia
Elateridae
Distribution
Fossil
Morphology
Pityobiinae
url https://doi.org/10.1038/s41598-024-80950-w
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