Myrmecophily of the enigmatic stag beetle Torynognathus chrysomelinus (Coleoptera: Lucanidae: Lucaninae) with remarks on adult morphology, immature stages, and systematic position

Kakizoe, Showtaro and Kakinuma, Shunsuke and Hoshino, Konosuke and Hashim, Rosli and Abdullah, Nurul Ashikin and Maruyama, Munetoshi (2023) Myrmecophily of the enigmatic stag beetle Torynognathus chrysomelinus (Coleoptera: Lucanidae: Lucaninae) with remarks on adult morphology, immature stages, and systematic position. Entomological Science, 26 (1). ISSN 1343-8786, DOI https://doi.org/10.1111/ens.12539.

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Abstract

Adults and various immature stages of the stag beetle Torynognathus chrysomelinus Bomans, 1986 were found inside the nests of Pseudolasius ants in Peninsular Malaysia. This paper provides a detailed description of T. chrysomelinus, which is the first ever record of myrmecophily in this genus and the third record in the family Lucanidae. This is also the first record of myrmecophilous Coleoptera with Pseudolasius ants as a host. The description includes the illustration of the male genitalia, mouthparts, larva, and pupa of this genus for the first time. Furthermore, the systematic position of T. chrysomelinus was inferred by the molecular phylogenetic analysis of the family Lucanidae. The results suggest that Torynognathus is a sister taxon to the genus Aegus.

Item Type: Article
Funders: Kyushu University, Universiti Malaya
Uncontrolled Keywords: Ant; Molecular phylogeny; Pseudolasius; Scarabaeoidea; Southeast Asia; Taxonomy
Subjects: Q Science > QH Natural history > QH301 Biology
Divisions: Faculty of Science > Institute of Biological Sciences
Depositing User: Ms Zaharah Ramly
Date Deposited: 28 Jun 2025 07:54
Last Modified: 28 Jun 2025 07:54
URI: http://eprints.um.edu.my/id/eprint/38512

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