First report of an intersex individual of the click beetle Pectocera fortunei (Elateridae) and additional cases of gynandromorphism in Coleoptera (Lucanidae, Scarabaeidae)

By

Kim, Donguk
Hyun, Sangeun
Choi, Kwang Shik

Type

Article

Date of Publication

2025-2-20

Original Publication

Biodiversity data journal

Volume

13

Pages

1--19

Subjects

Dorcus , Korea , Rhinoceros beetle , sexual dimorphism , Stag beetle , Trypoxylus

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia Pensoft Publishers [2013]-

Identifiers

DOI: https://doi.org/10.3897/BDJ.13.e144929

 

Abstract

The occurrence of individuals exhibiting both male and female phenotypes is a rare phenomenon observed across various insect orders.<br> This study documents the first case of an intersex individual of Pectocera fortunei Candèze, 1873, from the Korean Peninsula, including behavioural findings. This is the first report of such a phenomenon in the family Elateridae. Two cases of gynandromorphism are also described: one in Dorcus titanus castanicolor (Motschulsky, 1861) (Lucanidae) and the other in Trypoxylus dichotomus septentrionalis (Kôno, 1931) (Scarabaeidae). The former is a new record for this subspecies. An updated list of intersex and gynandromorphic beetles is also provided.