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Rhaetulus Stag Beetle Gigas
IntermediateRhaetulus crenatus gigas
A stag beetle from Southeast Asia belonging to the Rhaetulus genus. The uniquely shaped mandibles extending like horns evoke deer antlers, which is the origin of its name. The gigas subspecies tends to grow particularly large and impressive.
Difficulty
Intermediate
Temperature
20〜26℃
Lifespan
Adult 6mo-1yr
Size
30-80mm
Humidity
60〜80%
Diet
Tree sap, beetle jelly
About
Rhaetulus crenatus gigas is a deer stag beetle of Southeast Asia, whose Japanese name comes from antler-like mandibles reminiscent of a deers horns. The gigas subspecies tends to grow especially large within the species, with an impressive presence. Husbandry uses a small to medium enclosure with oviposition logs and fermented substrate. Adults are fed insect jelly, and larvae can be reared in fungal substrate bottles or fermented substrate. Maintaining moderately high humidity supports stable care. Its distinctive mandible shape makes it popular with enthusiasts, and it is regarded as a distinctive exotic stag beetle.
Source: Wikipedia (CC BY-SA 4.0)
Basic Info
Origin
Southeast Asia
Lifespan
Adult 6mo-1yr
Size
30-80mm
Temperature
20〜26℃
Humidity
60〜80%
Diet
Tree sap, beetle jelly
Care Guide
Temperature
Maintain 20-26°C
Larval Care
Breeding Records & Localities
Notable localities
台湾ベトナム中国南部
Regional subspecies
- Rhaetulus crenatus gigas — 大型亜種
シカクワガタ(Rhaetulus crenatus)の大型亜種。BE-KUWA 認定飼育レコードに当該亜種の登録が確認できないためサイズ記録は未掲載。
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.
Taxonomy & Authority
Accepted name: Rhaetulus crenatus gigas Westwood, 1871
Authority databases: GBIF
Nomenclature follows global taxonomic authority databases.
Regulations & Conservation Status
Not CITES-listed
Plant Protection Act: コガネムシ上科(カブトムシ・クワガタムシ・ハナムグリ等)の生きた個体を輸入する際は、外来生物法に基づき輸出国政府機関等が発行する種類名証明書の添付が必要(輸入港は成田・中部・関西・福岡・鹿児島の各空港に限定)。本種自体は特定外来生物ではなく、証明書の添付により輸入可能。
Sources: 環境省 外来生物法「コガネムシ上科に含まれる生きた昆虫を輸入される方へ」 / CITES 附属書(checklist.cites.org)
Regulations may change. Always verify the latest information with the relevant authorities.
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