Invertebrate · Beetle
Polyphemus beetle care guide
Mecynorhina polyphemus
The polyphemus beetle is a intermediate-level beetle from Central and West Africa. Adults reach Body 4–8 cm and live Adults 4–6 months (1–1.5 years from egg) in captivity. One of the largest flower beetles; adults need climbing wood and a secure lid.
- Enclosure 45 × 30 × 30 cm
- Temp 22–27°C
- Humidity 60–70%
How much does a polyphemus beetle cost in Canada?
Polyphemus beetle quick facts
- Skill level
- Intermediate
- Adult size
- Body 4–8 cm
- Lifespan
- Adults 4–6 months (1–1.5 years from egg)
- Activity
- Diurnal
- Native range
- Central and West Africa
- Minimum enclosure
- 45 × 30 × 30 cm (18 × 12 × 12 in, ≈ 11 US gal)
- Housing
- A colony species – best kept in a group.
- Temperature
- 22–27°C
- Humidity
- 60–70%
- UVB
- Not needed
- Diet
- Adults: frugivore – fruit, beetle jelly. Larvae: rotting leaves, wood, protein
- Bioactive style
- Invertebrate colony
Polyphemus beetle enclosure & bioactive setup
Give one adult at least 45 × 30 × 30 cm (18 × 12 × 12 inches). A colony species – best kept in a group. This species suits a invertebrate colony bioactive build.
- Leaf litter2 cm
- Jurassic ABG Terrarium Mix15 cm
Leaf litter is food here, not decoration – keep a thick layer topped up. Keep one side damper than the other.
Temperature: 22–27°C. Humidity: 60–70%. UVB: Not needed.
What does a polyphemus beetle eat?
Adults: frugivore – fruit, beetle jelly. Larvae: rotting leaves, wood, protein. Give adults fruit or beetle jelly every 2–3 days; larvae benefit from added protein.
Handling, temperament & health
Strong-gripping but gentle adults that fly readily.
Health watch: Larvae can be cannibalistic; give plenty of space and protein.
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 polyphemus beetle bioactive
Quantities are for one minimum-size enclosure (45 × 30 × 30 cm).
Polyphemus beetle FAQ
Is the polyphemus beetle good for beginners?
The polyphemus beetle is best for keepers with some experience (intermediate). Strong-gripping but gentle adults that fly readily.
What size enclosure does a polyphemus beetle need?
At least 45 × 30 × 30 cm (about 18 × 12 × 12 inches, roughly 11 US gallons) for one adult. A colony species – best kept in a group.
How much does a polyphemus beetle cost in Canada?
Typically $30–80 CAD to buy, about $150–230 CAD for a complete bioactive enclosure, and $40–70 CAD a year to keep.
What temperature and humidity does a polyphemus beetle need?
Temperature: 22–27°C. Humidity: 60–70%.
What does a polyphemus beetle eat?
Adults: frugivore – fruit, beetle jelly. Larvae: rotting leaves, wood, protein. Give adults fruit or beetle jelly every 2–3 days; larvae benefit from added protein.
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.