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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)
Lifespan of the Rhaetulus Stag Beetle Gigas
The Rhaetulus Stag Beetle Gigas lives Adult 6mo-1yr.
Size of the Rhaetulus Stag Beetle Gigas
The Rhaetulus Stag Beetle Gigas grows to 30-80mm.
Temperature & humidity for the Rhaetulus Stag Beetle Gigas
The ideal temperature for the Rhaetulus Stag Beetle Gigas is 20〜26℃.
Basic Info
Origin
Southeast Asia
Lifespan
Adult 6mo-1yr
Size
30-80mm
Breeding Records & Localities
Notable localities
TaiwanVietnamSouthern China
Regional subspecies
- Rhaetulus crenatus gigas — Large subspecies
A large subspecies of the deer stag beetle (Rhaetulus crenatus). Size records are not yet listed, as registration of this subspecies could not be confirmed in BE-KUWA-certified captive breeding records.
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, 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.
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: 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.
Rhaetulus Stag Beetle Gigas Listings
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