A Japan-focused review of East Asian Acicnemis Fairmaire, 1849 (Coleoptera, Curculionidae) reveals cryptic diversity in a well-studied region

Abstract The East Asian species of Acicnemis Fairmaire, 1849 (Coleoptera: Curculionidae: Molytinae) are reviewed using a combination of traditional morphological approaches (microscopy, dissections) and DNA barcoding. Three new species, A. cryptica Lewis & Kojima, sp. nov., A. koguma Lewis & Kojima, sp. nov. and A. squamata Lewis & Kojima, sp. nov. are described from mainland Japan. The former two species are cryptic and sister to more widespread, previously described taxa. Based on examination of name-bearing type material and morphological considerations Acicnemis cruciata Kleine, 1924 syn. nov. is a junior subjective synonym of Acicnemis postica Hubenthal, 1919, Acicnemis yakushimana Morimoto & Miyakawa, 1995 syn. nov. is a junior subjective synonym of A. dividicincta Morimoto & Miyakawa, 1995, and Acicnemis dorsonigrita Voss, 1941 syn. nov. is a junior subjective synonym of Acicnemis palliata Pascoe, 1872. Lectotypes are designated for Acicnemis albofasciata (Ter-Minasian, 1953), A. laeta Hubenthal, 1919, A. postica Hubenthal, 1919 and A. sauteri Hubenthal, 1919. Important morphological characters used in Acicnemis species identification are reviewed and a key to the East Asian species is provided. DNA (CO1) barcoding is used to supplement our morphology-based species hypothesis, and the first published barcodes for most species covered here are presented.

• Publication year

  2025

• Venue

  ZooKeys

• Publication date

  2025-11-10

• Fields of study

  Biology, Medicine, Environmental Science

• Identifiers
  DOI 10.3897/zookeys.1259.164450PMID 41262462PMCID 12624354
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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