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Fruhstorfer's Golden Stag Beetle
AdvancedAllotopus moellenkampi fruhstorferi
A subspecies of Allotopus moellenkampi from the highlands of Borneo. The smallest in the genus, stocky, with a roughly sculptured pronotum. Rarely collected and rarely bred, it is the scarcest golden stag.
Difficulty
Advanced
Temperature
20〜28℃
Lifespan
Adults 3-6 months
Size
Males up to 55.0 mm (captive record)
Humidity
60〜80%
Diet
Beetle jelly
About
Fruhstorfer's golden stag (Allotopus moellenkampi fruhstorferi) is the Bornean subspecies of A. moellenkampi; GBIF specimen localities cluster in Sabah and West Kalimantan. The Sumatran beetle is the nominate subspecies and is easily confused with it. It is the smallest golden stag, with a BE-KUWA captive record of 55.0 mm (2017; wild 57.1 mm). Stocky overall and similar to the nominate form, it differs in a roughly sculptured pronotum and a duller gold; large males become deep-bodied. Malaysian northern Borneo and Indonesian southern Kalimantan populations differ in tone, northern males having coarse pronotal punctures and dark females. It is taken at high altitude in small numbers, and captive breeding is the hardest in the genus, often failing even with set-ups that work for babai. Even captive-bred stock is scarce, making it the rarest and most expensive golden stag. Use Trametes (kawara) fungus wood or bottles for egg laying and larvae, and keep temperatures strictly cool.
Source: Wikipedia (CC BY-SA 4.0)
Lifespan of the Fruhstorfer's Golden Stag Beetle
The Fruhstorfer's Golden Stag Beetle lives Adults 3-6 months.
Size of the Fruhstorfer's Golden Stag Beetle
The Fruhstorfer's Golden Stag Beetle grows to Males up to 55.0 mm (captive record).
Basic Info
Origin
Borneo (Sabah, Malaysia; Kalimantan, Indonesia)
Lifespan
Adults 3-6 months
Size
Males up to 55.0 mm (captive record)
Care Specifications
SolitaryBreeding: Very hard
Sources: Allotopus (genus) - Wikipedia (JA) / beetlebreeding.ch - Allotopus moellenkampi fruhstoferi
Breeding Records & Localities
Captive record (♂)
55 mm
Wild record (♂)
57.1 mm
Record source: BE-KUWA 2025 edition (Golden stag Fruhstorfer's, captive 55.0 mm, 桧山真樹 2017 / wild 57.1 mm)
Notable localities
Borneo (Sabah)Borneo (Kalimantan)
Regional subspecies
- Allotopus moellenkampi fruhstorferi — Bornean highlands
The smallest and rarest golden stag; captive breeding is extremely difficult.
Generation codes
- WD
- Wild-caught
- WF1
- Offspring of a wild-caught female
- F1〜
- Captive generations (same locality)
- CBF1
- Cross-locality captive-bred (reset)
Sources: BE-KUWA Certified Breeding Records (Mushi-sha, FY2025 edition PDF, JA) / Allotopus (genus) - Wikipedia (JA)
References & Sources
Edited & verified by: BreederDirect editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Taxonomy & Authority
Accepted name: Allotopus moellenkampi fruhstorferi Nagel, 1925
Synonyms: Allotopus fruhstorferi Nagel, 1925
Authority databases: GBIF
Nomenclature follows global taxonomic authority databases.
Regulations & Conservation Status
Not CITES-listed
Plant Protection Act: When importing live specimens of Scarabaeoidea (including rhinoceros beetles, stag beetles, flower beetles, etc.), a species identification certificate issued by the exporting country government agency or equivalent must be attached in accordance with the Invasive Species Act (import ports are limited to Narita, Chubu, Kansai, Fukuoka, and Kagoshima airports). This species itself is not a designated invasive species, and import is possible upon submission of the certificate.
Sources: Ministry of the Environment, Invasive Species Act: "Guidance for Those Importing Live Insects in Scarabaeoidea" / CITES Appendix (checklist.cites.org)
Regulations may change. Always verify the latest information with the relevant authorities.
Fruhstorfer's Golden Stag Beetle Listings
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