Invertebrate · Beetle
Western Hercules beetle care guide
Dynastes granti
The western hercules beetle is a intermediate-level beetle from SW United States. Adults reach Body 5–8 cm and live Adults 6–12 months (2–3 years from egg) in captivity. Keep larvae separately in deep flake soil to avoid injuries.
- Enclosure 45 × 30 × 30 cm
- Temp 20–26°C
- Humidity 50–70%
How much does a western hercules beetle cost in Canada?
Western Hercules beetle quick facts
- Skill level
- Intermediate
- Adult size
- Body 5–8 cm
- Lifespan
- Adults 6–12 months (2–3 years from egg)
- Activity
- Nocturnal
- Native range
- SW United States
- Minimum enclosure
- 45 × 30 × 30 cm (18 × 12 × 12 in, ≈ 11 US gal)
- Housing
- Best kept alone.
- Temperature
- 20–26°C
- Humidity
- 50–70%
- UVB
- Not needed
- Diet
- Adults: frugivore – fruit, beetle jelly. Larvae: flake soil and rotten wood
- Bioactive style
- Invertebrate colony
Western Hercules beetle enclosure & bioactive setup
Give one adult at least 45 × 30 × 30 cm (18 × 12 × 12 inches). Best kept alone. This species suits a invertebrate colony bioactive build.
- Leaf litter2 cm
- Jurassic ABG Terrarium Mix12 cm
- Base layer – packed coco fibre13 cm
Leaf litter is food here, not decoration – keep a thick layer topped up. Keep one side damper than the other. This species digs, so give it 25 cm (10 in) of substrate in total. Only the top 12 cm needs to be bioactive soil; the 13 cm underneath can be cheaper coco fibre, dampened and packed firm.
Temperature: 20–26°C. Humidity: 50–70%. UVB: Not needed.
What does a western hercules beetle eat?
Adults: frugivore – fruit, beetle jelly. Larvae: flake soil and rotten wood. Feed adults fruit or beetle jelly every 2–3 days; refresh larval substrate every few months.
Handling, temperament & health
Gentle; males can grip with horns.
Health watch: Larvae deform or starve in shallow or poor substrate.
Cleaning & maintenance schedule
Daily
- Nothing needed most days.
Weekly
- Mist the damp side; add vegetables or protein food in small amounts and remove leftovers after 24–48 h.
Monthly
- Top up leaf litter and add a calcium source (cuttlebone).
- Thin out the colony or split it if it gets crowded.
Yearly
- Replace about a third of the soil, which turns into frass over time.
Recommended for a western hercules beetle bioactive
Quantities are for one minimum-size enclosure (45 × 30 × 30 cm).
Jurassic ABG Terrarium Mix
Bioactive top layer, 12 cm
Premium Coconut Fiber
Base layer, 13 cm – dampen and pack firm so burrows hold
Red Oak Leaves 15/Pack
Leaf litter – food and cover for the clean-up crew
Dry Sphagnum Moss 100g Pack
Sphagnum (humid corner)
Cork Bark Flats
Hides, breeding sites and a food source
Western Hercules beetle FAQ
Is the western Hercules beetle good for beginners?
The western Hercules beetle is best for keepers with some experience (intermediate). Gentle; males can grip with horns.
What size enclosure does a western Hercules beetle need?
At least 45 × 30 × 30 cm (about 18 × 12 × 12 inches, roughly 11 US gallons) for one adult. Best kept alone.
How much does a western Hercules beetle cost in Canada?
Typically $50–120 CAD to buy, about $160–250 CAD for a complete bioactive enclosure, and $40–80 CAD a year to keep.
What temperature and humidity does a western Hercules beetle need?
Temperature: 20–26°C. Humidity: 50–70%.
What does a western Hercules beetle eat?
Adults: frugivore – fruit, beetle jelly. Larvae: flake soil and rotten wood. Feed adults fruit or beetle jelly every 2–3 days; refresh larval substrate every few months.
Similar species
This care sheet is general guidance from One Bioactive, not veterinary advice. Needs vary with age, locality and individual animals – confirm with your breeder and an exotics vet. Prices are typical Canadian ranges in CAD and change over time.