Source: Wikimedia Commons
Giraffe Stag Beetle (Java)
IntermediateProsopocoilus giraffa borobudur
A giraffe stag subspecies from Java, Bali and southern Sumatra. Slightly smaller than the nominate form and steadily available in the trade as Javanese stock.
Difficulty
Intermediate
Temperature
20〜26℃
Lifespan
Adults 6-15 months
Size
Males 58-103 mm / females 41-49.5 mm
Humidity
60〜80%
Diet
Tree sap, beetle jelly
About
The Borobudur subspecies of the giraffe stag (Prosopocoilus giraffa borobudur) occurs on Java, Bali and southern Sumatra and is named after the Buddhist monument on Java. Males measure 58-103 mm and females 41-49.5 mm; the wild maximum is 103.0 mm and the captive record 102.2 mm. It shows the species' thick-based, wavy mandibles with forked tips, but is a size class below keisukei and daisukei. Biology matches the species: it feeds on sap high in rainforest hardwoods and females lay in rotten wood. Larvae pupate 7-14 months after hatching and adults live 6-15 months. Keep at about 20-26 C, collect eggs from fairly soft logs, and rear larvae in fungus bottles or substrate; keep singly because stressed males injure females. Javanese stock is reliably available, making it a good first giraffa. The BE-KUWA captive record is 102.2 mm (2025).
Source: Wikipedia (CC BY-SA 4.0)
Lifespan of the Giraffe Stag Beetle (Java)
The Giraffe Stag Beetle (Java) lives Adults 6-15 months.
Size of the Giraffe Stag Beetle (Java)
The Giraffe Stag Beetle (Java) grows to Males 58-103 mm / females 41-49.5 mm.
Temperature & humidity for the Giraffe Stag Beetle (Java)
The ideal temperature for the Giraffe Stag Beetle (Java) is 20〜26℃.
Basic Info
Origin
Indonesia (Java, Bali, southern Sumatra)
Lifespan
Adults 6-15 months
Care Specifications
Semi-aggressiveSolitaryBreeding: Easy
Sources: beetlebreeding.ch - The Breeding/Rearing of Prosopocoilus giraffa keisukei by Kay (species-level guidance) / Prosopocoilus giraffa (subspecies list) - Wikipedia (JA)
Breeding Records & Localities
Captive record (♂)
102.2 mm
Wild record (♂)
103 mm
Record source: BE-KUWA 2025 edition (Giraffa (borobudur), captive 102.2 mm, 楊學文 2025 / wild 103.0 mm)
Notable localities
Indonesia (Java)Indonesia (Bali)Indonesia (southern Sumatra)
Regional subspecies
- Prosopocoilus giraffa borobudur — Java, Bali and southern Sumatra
Subspecies of Java, Bali and southern Sumatra. The GBIF backbone lists it as a synonym of the nominate form, while BE-KUWA keeps a separate record category.
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)
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.
Primary sources
- Wikipedia
- Ministry of the Environment, Invasive Species Act: "Guidance for Those Importing Live Insects in Scarabaeoidea"
- CITES Appendix (checklist.cites.org)
- beetlebreeding.ch - The Breeding/Rearing of Prosopocoilus giraffa keisukei by Kay (species-level guidance)
- BE-KUWA Certified Breeding Records (Mushi-sha, FY2025 edition PDF, JA)
- GBIF
Taxonomy & Authority
Accepted name: Prosopocoilus giraffa borobudur Mizunuma & Nagai, 1991
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.
Giraffe Stag Beetle (Java) Listings
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