RecoveryInvertebrates
Rhino / Hercules beetle care guide
Dynastes / Xylotrupes spp.
The substrate is both home and diet: composting hardwood leaf litter and rotten wood over deep soil. Get the substrate right and the rest of the care is water and patience.
Fossorial — deep substrate for burrowing
Rhino / Hercules beetle enclosure size
Fossorial — deep substrate for burrowing. An adult rhino / hercules beetle should live in at least 9" L × 8" W × 10" H; we build toward 12" L × 8" W × 12" H (1 × 0.7 × 1 ft, roughly 0.7 sq ft of floor and about a 5-gallon glass equivalent).
- Spiderling / sling
- 8" L × 6" W × 8" H recommended · min 6" L × 4" W × 6" H
- Juvenile
- 12" L × 8" W × 10" H recommended · min 10" L × 8" W × 8" H
- Adult
- 12" L × 8" W × 12" H recommended · min 9" L × 8" W × 10" H
Temperature and heating
Heat the room, not the enclosure. If the room drops below 68 °F use a thermostatted space heater or a heat mat on the outside of a side wall (never under the substrate) — heat mats under a burrow cook the animal.
- Basking / warm surface
- None — no basking site, no heat lamp
- Warm side (ambient)
- 72–80 °F ambient room temperature
- Cool side (ambient)
- 70–75 °F ambient room temperature
- Night
- Room temperature; a 5–8 °F night drop is fine
Lighting and UVB
UVB: None — invertebrates need no UVB and bright light stresses them. Run lights on a Ambient room light on a normal day/night cycle; keep the enclosure out of direct sun photoperiod, on a timer, and replace UVB bulbs on the manufacturer's schedule even while they still emit visible light.
Humidity
Target 75–85% ambient. Keep the substrate evenly moist (damp, not waterlogged), overflow the water dish and mist a wall rather than the animal.
Substrate and depth
Topsoil, coco fibre, crushed hardwood leaf litter and rotten wood, plus a calcium source. Depth: 6–10 in — they spend most of their life buried.
- Ventilation: Small vents only. These species need a closed, humid, composting environment — springtails in the bin keep mold in check.
Enclosure tips and furnishing
- Thick hardwood leaf litter layer
- Rotten wood chunks
- Cuttlebone or crushed oyster shell for calcium
- Shallow water dish or a heavy mist twice weekly
Build list
- Deep opaque bin or terrarium — Depth beats footprint; opaque sides make them surface more often.
- Hardwood leaf litter and flake soil — This is the actual diet — vegetables are a supplement, not the food.
- Digital thermometer / hygrometer — Inverts are kept at room temperature — you need to know what the room actually does, not guess.
- Long feeding tongs and a catch cup — Every interaction — feeding, water top-ups, rehousing — should happen without your hand near the animal.
Rhino / Hercules beetle FAQ
How big should an adult Rhino / Hercules beetle enclosure be?
At least 9" L × 8" W × 10" H, and we recommend building to 12" L × 8" W × 12" H — about 1 × 0.7 × 1 ft, or a 5-gallon glass equivalent. Fossorial — deep substrate for burrowing.
What temperatures does a Rhino / Hercules beetle need?
Basking or warm surface None — no basking site, no heat lamp, warm side 72–80 °F ambient room temperature, cool side 70–75 °F ambient room temperature, night Room temperature; a 5–8 °F night drop is fine. Heat the room, not the enclosure. If the room drops below 68 °F use a thermostatted space heater or a heat mat on the outside of a side wall (never under the substrate) — heat mats under a burrow cook the animal.
Does a Rhino / Hercules beetle need UVB?
None — invertebrates need no UVB and bright light stresses them. Photoperiod: Ambient room light on a normal day/night cycle; keep the enclosure out of direct sun.
What humidity does a Rhino / Hercules beetle need?
75–85% ambient. Keep the substrate evenly moist (damp, not waterlogged), overflow the water dish and mist a wall rather than the animal.
What substrate is best for a Rhino / Hercules beetle?
Topsoil, coco fibre, crushed hardwood leaf litter and rotten wood, plus a calcium source, at a depth of 6–10 in — they spend most of their life buried.
How big does a Rhino / Hercules beetle enclosure need to be for a hatchling?
Spiderling / sling: 8" L × 6" W × 8" H recommended, minimum 6" L × 4" W × 6" H. Scale up to the adult footprint as the animal grows.
Is there anything to be careful about when keeping a Rhino / Hercules beetle?
Larvae live 1–2 years in flake soil; adults live only a few months. Log the larval instars.
How much ventilation does a Rhino / Hercules beetle enclosure need?
Small vents only. These species need a closed, humid, composting environment — springtails in the bin keep mold in check.
Sources
Put this guide to work
Apply these targets to your own rhino / hercules beetle record, then log feedings, sheds and weights against them.