Pectocera fortunei Candeze 1873
Creators: name: Kim, Donguk
name: Hyun, Sangeun
name: Choi, Kwang Shik
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Elateridae
Pectocera
Pectocera fortunei

description: Pectocera fortunei Candèze, 1873
Materials
Type status: Other material. Occurrence: sex: 1 intersex; occurrenceID: 52C9BE44-7BEA-5418-BC0A-7598D646DA89; Taxon: genus: Pectocera; specificEpithet: fortunei; scientificNameAuthorship: Candèze, 1873; Location: country: South Korea; locality: CNU, Gung-dong, Yuseong-gu, Daejeon, Sang Eun Hyun leg.; Event: eventDate: 25.V.2023; Record Level: basisOfRecord: Preserved Specimen
Type status: Other material. Occurrence: sex: 5 females; occurrenceID: DCF7A291-7B77-54A4-A0F3-BF14635E96E8; Taxon: genus: Pectocera; specificEpithet: fortunei; scientificNameAuthorship: Candèze, 1873; Location: country: South Korea; locality: CNU, Gung-dong, Yuseong-gu, Daejeon, Sang Eun Hyun leg.; Record Level: basisOfRecord: Preserved Specimen
Type status: Other material. Occurrence: sex: 1 male, 1 female; occurrenceID: EE66458A-FC82-55DB-AAB4-CB64DBE9B5E7; Taxon: genus: Pectocera; specificEpithet: fortunei; scientificNameAuthorship: Candèze, 1873; Location: country: Japan; locality: Aseri, Kyotanba Town, Kyoto Pref., 14.VI.2014, Satoshi Kubo leg.; Record Level: basisOfRecord: Preserved Specimen
Description
Morphology of the intersex Pectocera fortunei
The body overall exhibits female traits, except for the antennae (Figs 2, 3, 4). The head displays relatively small eyes and mandibles resembling those of a typical female (Fig. 3). The lateral margins of the pronotum are convex and arcuate, narrowing towards the posterior angles, as typically seen in females (Fig. 3). The antennae are pectinate, similar to those of a typical male and asymmetrical between the left and right sides, with nine irregularly transformed flagellomeres (Fig. 4). The genitalia are fully developed and identical to a typical ovipositor (Fig. 5).
Behavioral interactions between an intersex and a typical female
To examine the b ehavioural interactions between an intersex individual and a typical female, one of each was placed in a single breeding case for observation. As a result, they exhibited only biting and aggressive behaviour, with no mating behaviour observed.
Notes
In P. fortunei, the prominent male sexual characteristics include pectinate antennae, relatively large eyes and a narrow pronotum (Figs 2, 3). In the observed specimen, only female sexual characteristics were displayed in all body parts, including the genitalia, except for the antennae (Figs 2, 3, 4, 5). The antennae exhibited a pectinate pattern similar to that of a male. However, the nine flagellomeres appeared as if the female flagellomeres had been transformed into a slender and elongated shape like those of a male (Fig. 4). Consequently, it was ambiguous to clearly identify this as a distinct male trait; thus, the specimen was classified as intersex. This is the first record for this family.
description: Published as part of Kim, Donguk, Hyun, Sangeun & Choi, Kwang Shik, 2025, First report of an intersex individual of the click beetle Pectocera fortunei (Elateridae) and additional cases of gynandromorphism in Coleoptera (Lucanidae, Scarabaeidae), pp. e 144929 in Biodiversity Data Journal 13 on page e144929, DOI: 10.3897/BDJ.13.e144929