Source: Wikimedia Commons
Fabrice's Saw Stag Beetle
IntermediateProsopocoilus fabricei
A large saw stag beetle from Peleng and neighbouring islands east of Sulawesi, Indonesia. BE-KUWA lists captive records of 88.8mm for the subspecies takakuwai and 72.7mm for the nominate form.
Difficulty
Intermediate
Temperature
20〜24℃
Lifespan
About 8-10 months as adults, the general rule for foreign saw stag beetles
Size
Males: captive record 88.8mm (subspecies takakuwai), wild 86.0mm; females: captive record 42.6mm
Humidity
60〜80%
Diet
Beetle jelly; larvae on fermented substrate or fungus bottles
About
Prosopocoilus fabricei was described by Lacroix in 1988. The specimen records aggregated in GBIF cluster on Peleng in the Banggai Islands east of Sulawesi, Indonesia, with further records from Taliabu in the Sula Islands. In the hobby the nominate form and the subspecies takakuwai are kept apart: the BE-KUWA 2025 edition lists a captive record of 88.8mm for takakuwai (Kakiuchi Chikara, registered 2013, wild maximum 86.0mm) and 72.7mm for the nominate form (Toozawa Koichi, registered 2004, wild maximum 69.3mm), with a female captive record of 42.6mm. It is one of the larger Prosopocoilus, and stock reaching Japan is mostly captive bred. Care follows the standard routine for foreign saw stags: keep adults and larvae near 20-24C and breed on a log buried in fermented substrate. Males have powerful mandibles and can crush a female during pairing, so supervise.
Source: Wikipedia (CC BY-SA 4.0)
Lifespan of the Fabrice's Saw Stag Beetle
The Fabrice's Saw Stag Beetle lives About 8-10 months as adults, the general rule for foreign saw stag beetles.
Its wild ecology and lifespan are not well known.
Size of the Fabrice's Saw Stag Beetle
The Fabrice's Saw Stag Beetle grows to Males: captive record 88.8mm (subspecies takakuwai), wild 86.0mm; females: captive record 42.6mm.
Temperature & humidity for the Fabrice's Saw Stag Beetle
The ideal temperature for the Fabrice's Saw Stag Beetle is 20〜24℃.
Basic Info
Origin
Care Specifications
AggressiveSolitaryBreeding: Moderate
Sources: Tsukiyono Kinokoen: Prosopocoilus giraffa rearing manual (general care for foreign saw stags) / BE-KUWA rearing records (2025 edition, Mushi-sha) / GBIF Backbone Taxonomy
Breeding Records & Localities
Captive record (♂)
88.8 mm
Wild record (♂)
86 mm
Record source: BE-KUWA 2025 edition (takakuwai: captive 88.8 mm, Kakiuchi Chikara, registered 2013, wild 86.0 mm; nominate: captive 72.7 mm, Toozawa Koichi, registered 2004, wild 69.3 mm; female captive 42.6 mm, Kakiuchi Chikara, registered 2016)
Notable localities
Peleng (Banggai Islands)Taliabu (Sula Islands)
Regional subspecies
- Prosopocoilus fabricei fabricei（Nominate subspecies）
- Prosopocoilus fabricei takakuwai（Listed in the BE-KUWA 2025 records; the GBIF Backbone has no subspecies under this species.）
Generation codes
- WD
- Wild-caught
- WF1
- Offspring of a wild-caught female
- F1〜
- Captive generations (same locality)
- CBF1
- Cross-locality captive-bred (reset)
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)
- Tsukiyono Kinokoen: Prosopocoilus giraffa rearing manual (general care for foreign saw stags)
- BE-KUWA rearing records (2025 edition, Mushi-sha)
- GBIF Backbone Taxonomy
Taxonomy & Authority
Accepted name: Prosopocoilus fabricei (Lacroix, 1988)
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.
Fabrice's Saw Stag Beetle Listings
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