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Issue: Vol. 5492 No. 2: 5 Aug. 2024
Type: Article
Published: 2024-08-05
DOI: 10.11646/zootaxa.5492.2.4
Page range: 214-230
Abstract views: 57
PDF downloaded: 35

Three new species of the extant genus Eucinetus from mid-Cretaceous amber of northern Myanmar (Coleoptera: Eucinetidae)

State Key Laboratory of Palaeobiology and Stratigraphy; Nanjing Institute of Geology and Palaeontology; Chinese Academy of Sciences; Nanjing 210008; China; Bristol Palaeobiology Group; School of Earth Sciences; University of Bristol; Bristol BS8 1TQ; UK
Division of Invertebrate Zoology; American Museum of Natural History; New York; NY 10024-5192; USA; Facultad de Ciencias Biológicas; Universidad Nacional Mayor de San Marcos; Lima 15081; Perú; Departamento de Entomología; Museo de Historia Natural; Universidad Nacional Mayor de San Marcos; Lima 15072; Perú
State Key Laboratory of Palaeobiology and Stratigraphy; Nanjing Institute of Geology and Palaeontology; Chinese Academy of Sciences; Nanjing 210008; China
State Key Laboratory of Palaeobiology and Stratigraphy; Nanjing Institute of Geology and Palaeontology; Chinese Academy of Sciences; Nanjing 210008; China
Coleoptera eucinetidae taxonomy fossil Kachin amber Cretaceous

Abstract

Three new species of plate-thigh beetles are described and figured from mid-Cretaceous Kachin amber, all representing the extant genus Eucinetus Germar. The species, Eucinetus debilispinus Li & Cai sp. nov., E. panghongae Li & Cai sp. nov., and E. zhenhuai Li & Cai sp. nov., are distinguished from each other by the forms of the antennomeres, leg spination, and form of the spurs. The genus Eucinetus represents a key example of long-term evolutionary stasis with a subcortical lifestyle. This further demonstrates the role of stable cryptic microhabitats in the persistence of some lineages over vast spans of geological time.

 

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