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Dynastes hercules bleuzeni
A subspecies from Bolivar State in eastern Venezuela and northern Brazil. The cephalic horn has two pointed basal processes and the dull ochre elytra carry large black spots. Some researchers include trinidadensis in this subspecies.
Dynastes hercules bleuzeni, also spelled Breuzeni in Japanese, occurs in Bolivar State in eastern Venezuela and in Roraima and Para in northern Brazil. Males measure 66-151 mm in total length and females 55-66 mm. The cephalic horn is fairly straight with a long apical process and two pointed basal processes; the thoracic horn is slightly curved at the base, straight in the middle, with a longish triangular process, and the pronotal punctures are broad and coarse. Elytra are dull ochre with large black spots. Some researchers include trinidadensis from Trinidad in this subspecies. It is named after the Frenchman Patrick Bleuzen and had reportedly not been imported into Japan as of 2002. Keep at 20-26 C and let females lay in fermented substrate; adults live 8-12 months and larvae take 1-1.5 years (females) or 1.5-2 years (males). The BE-KUWA 2025 list has no record category for this subspecies.
Source: Wikipedia (CC BY-SA 4.0)
The Hercules Bleuzeni lives Adults 8-12 months.
The Hercules Bleuzeni grows to Males 66-151 mm / females 55-66 mm.
The ideal temperature for the Hercules Bleuzeni is 20〜26℃.
Origin
Eastern Venezuela (Bolivar) and northern Brazil (Roraima, Para)
Lifespan
Sources: beetlebreeding.ch - The Breeding/Rearing of Dynastes hercules hercules by Kay / Hercules beetle, Dynastes hercules (subspecies list) - Wikipedia (JA)
Notable localities
Regional subspecies
Subspecies from around the Guiana Highlands; the BE-KUWA 2025 list has no record category for it. Subspecies status is debated: Ratcliffe (2003) proposed synonymising all subspecies, but BE-KUWA and Ratcliffe's own 2013/2015 works keep the traditional subspecies (ja Wikipedia).
Generation codes
Sources: BE-KUWA Certified Breeding Records (Mushi-sha, FY2025 edition PDF, JA) / Hercules beetle, Dynastes hercules (subspecies list) - Wikipedia (JA)
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
Accepted name: Dynastes hercules bleuzeni Silvestre & Dechambre, 1995
Authority databases: GBIF
Nomenclature follows global taxonomic authority databases.
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.
Find listings for this species
Adults 8-12 months
Size
Males 66-151 mm / females 55-66 mm
Temperature
20〜26℃
Humidity
60〜80%
Beetle jelly, banana
Keep at roughly 20-26 C and avoid Japanese summer heat. A montane subspecies that dislikes stuffy heat.
Females lay in fermented substrate packed 20 cm or deeper. Rear larvae singly in roughly 10 L containers; the larval period is long, 1-1.5 years for females and 1.5-2 years for males, and shortens at higher temperatures.
Basically mild-tempered, but fights over food, so keep singly. Very rarely a male crushes and kills a female, so never leave a pair unattended.
Adults live about 8-12 months. Egg to emergence takes 1.5-2.5 years, so patience is needed.
The thoracic and cephalic horns pinch very hard, so keep fingers clear. A cramped enclosure stresses males and shortens their life. Long-horned males tip over easily, so add footholds.
Advanced. This is an advanced-level species. It requires specialized equipment and advanced husbandry skills with precise environmental control.
The ideal temperature for Hercules Bleuzeni is 20〜26℃. Avoid sudden temperature changes and maintain a stable environment.
The average lifespan of Hercules Bleuzeni is Adults 8-12 months. With proper care and nutrition, they can live a long and healthy life.
Hercules Bleuzeni typically reaches Males 66-151 mm / females 55-66 mm as an adult. Size may vary depending on care conditions and individual genetics.
Hercules Bleuzeni feeds on: Beetle jelly, banana. Aim for a balanced diet with appropriate feeding frequency.
The price of Hercules Bleuzeni varies significantly depending on bloodline, size, captive-bred generation, and sex. Check our market price page for the latest pricing information.
Last updated: September 15, 2026