Invertebrate · Beetle
Giant stag beetle care guide
Lucanus elaphus
The giant stag beetle is a intermediate-level beetle from Eastern United States. Adults reach Body 3–6 cm and live Adults 2–4 months (2–3 years from egg) in captivity. Keep males apart as they fight; larvae develop slowly in rotting wood.
- Enclosure 30 × 20 × 30 cm
- Temp 18–25°C
- Humidity 60–80%
How much does a giant stag beetle cost in Canada?
Giant stag beetle quick facts
- Skill level
- Intermediate
- Adult size
- Body 3–6 cm
- Lifespan
- Adults 2–4 months (2–3 years from egg)
- Activity
- Nocturnal
- Native range
- Eastern United States
- Minimum enclosure
- 30 × 20 × 30 cm (12 × 8 × 12 in, ≈ 5 US gal)
- Housing
- Best kept alone.
- Temperature
- 18–25°C
- Humidity
- 60–80%
- UVB
- Not needed
- Diet
- Adults: beetle jelly, fruit. Larvae: rotting hardwood
- Bioactive style
- Invertebrate colony
Giant stag beetle enclosure & bioactive setup
Give one adult at least 30 × 20 × 30 cm (12 × 8 × 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 fibre8 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 20 cm (8 in) of substrate in total. Only the top 12 cm needs to be bioactive soil; the 8 cm underneath can be cheaper coco fibre, dampened and packed firm.
Temperature: 18–25°C. Humidity: 60–80%. UVB: Not needed.
What does a giant stag beetle eat?
Adults: beetle jelly, fruit. Larvae: rotting hardwood. Feed adults beetle jelly every 2–3 days; larvae need rotting hardwood logs and flake soil.
Handling, temperament & health
Males have large jaws but pinch weakly; females bite harder.
Health watch: Larvae fail in substrate without decaying hardwood.
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 giant stag beetle bioactive
Quantities are for one minimum-size enclosure (30 × 20 × 30 cm).
Jurassic ABG Terrarium Mix
Bioactive top layer, 12 cm
Premium Coconut Fiber
Base layer, 8 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
Giant stag beetle FAQ
Is the giant stag beetle good for beginners?
The giant stag beetle is best for keepers with some experience (intermediate). Males have large jaws but pinch weakly; females bite harder.
What size enclosure does a giant stag beetle need?
At least 30 × 20 × 30 cm (about 12 × 8 × 12 inches, roughly 5 US gallons) for one adult. Best kept alone.
How much does a giant stag beetle cost in Canada?
Typically $40–100 CAD to buy, about $110–180 CAD for a complete bioactive enclosure, and $30–60 CAD a year to keep.
What temperature and humidity does a giant stag beetle need?
Temperature: 18–25°C. Humidity: 60–80%.
What does a giant stag beetle eat?
Adults: beetle jelly, fruit. Larvae: rotting hardwood. Feed adults beetle jelly every 2–3 days; larvae need rotting hardwood logs and flake soil.
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.