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Luminary Oddities · Natural history & art

Eastern Feather-horned Beetle

Rhipicera femorata

Coleoptera / Rhipiceridae

Rhipicera femorata is an Australian beetle with a black-and-white body and striking antennal dimorphism. The male’s large, many-branched fans carry vastly more sensory structures than the female’s smaller antennae.

Read the species account
Rhipicera femorata, male dorsal oblique view
The fan-antenna cabinetMale · Dorsal oblique view.Illustration adapted from File:Rhicpicera femorata - feather horned Beetle - Feb 2022 1 of 2.jpg by Xyxyzyz. CC BY-SA 4.0. Illustration licensed under CC BY-SA 4.0.

At a glance

Family ↘
Rhipiceridae [4]
Sexual dimorphism ↘
Male antennae form much larger fans. [3]
Habitat ↘
Open eucalypt forest in southeastern Australia. [1][2]

Identity

Rhipicera femorata is an Australian beetle in Rhipiceridae, also recorded under the subgeneric combination Rhipicera (Agathorhipis) femorata. [1][2]

Appearance

The body is black with white spots. Male antennae form large curved fans of blade-like segments, while the female’s antennae are substantially smaller and less elaborate. [1][3]

Range and habitat

The species occurs in eastern Australia and inhabits open eucalypt forest. An identified Museums Victoria observation comes from Sale Commons in East Gippsland, Victoria. [3][1][2]

Remarkable detail

Microscopy of one preserved male and one female estimated about 30,000 sensilla placodea per male antenna, compared with no more than approximately 100 per female antenna. These flat sensory structures were distributed across the flagellar branches. [3]

The large male fans expose a broad sensory surface to moving air. The authors interpreted their architecture as consistent with locating females through scent. [3]

Specimen views

A frontal or oblique view reveals the depth and curvature of the male antennal fans; a female retains a markedly different antennal outline. [3]

Display and care

Keep the enclosure closed and display it in indirect light, away from heat and damp conditions. Handle the frame by its edges and clean only its exterior according to the maker’s instructions.

Sources

  1. Rhipicera (Agathorhipis) femorata, Feather-horned Beetle ↗

    Museums Victoria · Accessed 2026-10-13

  2. Museums Victoria: specimen ZI 8451 Rhipicera femorata ↗

    Museums Victoria · Accessed 2026-10-13

  3. Towards an Understanding of Molecule Capture by the Antennae of Male Beetles Belonging to the Genus Rhipicera (Coleoptera, Rhipiceridae) ↗

    Ramsey and colleagues; The Anatomical Record 298, 1519–1534 (2015) · Accessed 2026-10-13

  4. GBIF Backbone Taxonomy: Rhipicera femorata ↗

    GBIF Secretariat · Accessed 2026-10-13

Sources checked 2026-10-13. Illustrations · Luminary Oddities.

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