Source: Wikimedia Commons
Giraffe Stag Beetle
IntermediateProsopocoilus giraffa
Worlds largest stag beetle. Massive 120mm mandibles are overwhelming. Flores Island specimens are largest and most popular.
Difficulty
Intermediate
Temperature
20〜28℃
Lifespan
Adult 6-12 months, larva 8-12 months
Size
Up to 120mm
Humidity
60〜80%
Diet
Beetle jelly (adult), fermented substrate (larva)
About
Prosopocoilus giraffa, the giraffe stag beetle, is the world's largest stag beetle, belonging to the family Lucanidae. It is widely distributed across moist forested regions of Asia from India to Indonesia, with nine recognized subspecies. Males possess exceptionally elongated, serrated mandibles that extend over half their body length, used to overpower rivals in fierce combat. Total length can reach 119 mm in the nominate subspecies, while P. g. keisukei may exceed 120 mm and P. g. daisukei displays the most vivid elytra coloration. Body color ranges from yellowish-brown to dark brown. The species is highly aggressive and must be handled with care. Captive temperature should be maintained at 22–27°C. Larvae are raised in fermented substrate or fungal substrate bottles. Adults have a lifespan of 3–8 months. The combination of record size, dramatic mandible form, and subspecies diversity makes the giraffe stag beetle a flagship species among stag beetle enthusiasts.
Source: Wikipedia (CC BY-SA 4.0)
Basic Info
Origin
moist forested regions of Asia, ranging from India to Indonesia
Lifespan
Adult 6-12 months, larva 8-12 months
Size
Up to 120mm
Temperature
20〜28℃
Humidity
60〜80%
Diet
Beetle jelly (adult), fermented substrate (larva)
Care Specifications
AggressiveSolitaryBreeding: Easy
Sources: Wikipedia ギラファノコギリクワガタ
Captive Breeding
Egg-laying
Breeding season: Early summer to summer (adult active season)
Breeding notes
Females lay eggs in fermented wood or substrate; hatched larvae are reared in fermented mat or fungal (mycelium) bottles. After eclosion, adults require several months of dormancy before they are ready to breed.
Breeding requires planning, proper husbandry, and responsibility. These figures are general guidelines.
Sources: Wikipedia ギラファノコギリクワガタ
Breeding Records & Localities
Captive record (♂)
122 mm
Wild record (♂)
121 mm
Record source: BE-KUWA No.85（2023年度版）（keisukei 飼育122.0mm 本間隆行 2022 / 野外121.0mm）
Notable localities
インドネシア（小スンダ列島・ジャワ等）インド東南アジア
Regional subspecies
- Prosopocoilus giraffa keisukei — 小スンダ列島（フローレス・ロンボク等。最大亜種）
- Prosopocoilus giraffa giraffa（原名亜種） — インド〜インドシナ
- Prosopocoilus giraffa borobudur — ジャワ・バリ・南スマトラ
- Prosopocoilus giraffa daisukei — フィリピン（ネグロス等）
- Prosopocoilus giraffa nilgiriensis — 南インド
- Prosopocoilus giraffa timorensis — ティモール
世界最長のクワガタ。亜種 keisukei が最大化する（飼育レコード: keisukei122.0 / daisukei119.4 / 原名亜種110.8mm）。飼育レコードは BE-KUWA（むし社）のコンテストで毎年更新される。産地・累代（CBF/WF/WD）・サイズで個体価値が大きく変動する。
Generation codes
- WD
- Wild-caught
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: Prosopocoilus giraffa (Olivier, 1789)
Synonyms: Prosopocoilus giraffa, Lucanus girafa Olivier, 1789
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.
Giraffe Stag Beetle Listings
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