Source: Wikimedia Commons
Golden Stag Beetle
AdvancedBeautifully golden stag beetle from SE Asian highlands. Turns black in humidity, golden when dry. Stunning display beetle.
Difficulty
Advanced
Temperature
20〜28℃
Lifespan
Adult 3-6 months, larva 6-10 months
Size
Up to 80mm
Humidity
60〜80%
Diet
Beetle jelly (adult), reishi wood/mushroom (larva)
About
The golden stag beetle (genus Allotopus) is a striking species from the highland forests of Southeast Asia, renowned for its brilliant all-over golden metallic sheen. A fascinating trait is that its coloration shifts to appear darker or blackish under high humidity conditions, reverting to vivid gold when dry. Body length reaches 40–80 mm. As a highland species, it is sensitive to heat and must be maintained at a cool 18–24°C. Larval rearing requires reishi (Ganoderma) fungal wood or specialized reishi substrate—standard fungal substrate bottles are generally unsuitable—adding considerable challenge to its husbandry. Enclosure humidity must be kept consistently high; desiccation is harmful. Females deposit eggs in reishi or equivalent fungal wood. Adults live 3–6 months. Its extraordinary beauty has earned it the reputation of "the jewel of stag beetles," making it among the most prized species in the collecting community.
Basic Info
Origin
highland forests of Southeast Asia, including Borneo and Sumatra
Lifespan
Adult 3-6 months, larva 6-10 months
Size
Up to 80mm
Temperature
20〜28℃
Humidity
60〜80%
Diet
Beetle jelly (adult), reishi wood/mushroom (larva)
Care Guide
Temperature
Breeding Records & Localities
Notable localities
ミャンマーボルネオ島ジャワ島マレー半島
Regional subspecies
- Allotopus moellenkampi
- Allotopus rosenbergi — ジャワ
- Allotopus babai
オウゴンオニクワガタ（Allotopus 属の総称）。黄金色の体色が特徴。サイズ記録は各種ページ（モセリ/モーレンカンプ/ローゼンベルグ等）を参照。
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 認定飼育レコード（むし社、2025年度版）
References & Sources
Edited & verified by: br-choku editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Primary sources
Golden Stag Beetle Listings
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