4.5 Article

Sexually dimorphic characters and shared aposematic patterns mislead the morphology-based classification of the Lycini (Coleoptera: Lycidae)

期刊

ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
卷 191, 期 3, 页码 902-927

出版社

OXFORD UNIV PRESS
DOI: 10.1093/zoolinnean/zlaa055

关键词

ancestral areas; divergence dating; net-winged beetles; taxonomy; zoogeography

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资金

  1. Czech Science Foundation [18-14942S]
  2. Faculty of Science, Palacky University in Olomouc

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A study on the Lycidae family conducted phylogenetic analysis, rejecting the polyphyletic assemblages of Lycus and Lycostomus, and redefined the classification of certain genera. Aposematic patterns evolved in different lineages, and high intraspecific polymorphism is influenced by local mimetic assemblages.
The Lycini (Elateroidea: Lycidae) contains > 400 species placed in four typologically based genera and numerous subgenera. We assembled a mito-ribosomal dataset representing similar to 100 species from the whole range and recovered a phylogeny rejecting Lycus and Lycostomus as polyphyletic assemblages. The male-specific wide elytra and elytral thorns are identified in unrelated Neolycus and Lycus. The morphological similarity based on sexual dimorphism and aposematic patterns defined terminal clades and misled the genus-rank classification. We delimit Neolycus, Rhyncheros reinst. name (= Thoracocalon syn. nov. = Lyconotus syn. nov.), Lipernes Lycostomus, Haplolycus and Lycus. Demosis and six subgenera of Lycus are synonymized with Lycus. Celiasis Laporte, 1840 is kept in the classification as a nomen dubium until any specimen is available. The deep lineages are known from the Americas and Asia. Africa was colonized by Lycus and Haplolycus. Each specific aposematic pattern occurs in a limited range, and the similar body shape and coloration evolved in unrelated sympatrically occurring lineages. High intraspecific polymorphism is putatively a result of the adaptation of various populations to local mimetic assemblages. Therefore, the delimitation of many phenotypically diverse species should be investigated.

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