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

Lewis, Jake H.; Kojima, Hiroaki; Campbell, Erin O.

doi:10.3897/zookeys.1259.164450

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

Title

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

By

Lewis, Jake H.
Kojima, Hiroaki
Campbell, Erin O.

Type

Article

Date of Publication

2025-11-10

Original Publication

ZooKeys

Volume

1259

Pages

103--167

Subjects

Biodiversity , DNA barcoding , island endemism , new species , species discovery , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.1259.164450

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License Type URL: https://creativecommons.org/licenses/by/4.0/
Rights: https://biodiversitylibrary.org/permissions
Copyright Status: In copyright. Digitized with the permission of the rights holder.
Rights Holder: Copyright held by individual article author(s).

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expand 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.