Bess beetle (Odontotaenius disjunctus)
Photo: Charles J. Sharp / CC BY-SA 4.0 · via Wikimedia Commons

Invertebrate · Beetle

Bess beetle care guide

Odontotaenius disjunctus

Beginner

The bess beetle is a beginner-level beetle from Eastern North America. Adults reach Body 3–4 cm and live 1–2 years (adult) in captivity. Social native beetle that feeds its larvae chewed wood; keep pairs or small groups.

  • Enclosure 30 × 20 × 20 cm
  • Temp 18–25°C
  • Humidity 60–80%

How much does a bess beetle cost in Canada?

Animal$15–30Typical captive-bred price
Bioactive enclosure$100–170Enclosure $30–60 · equipment $20–40 · bioactive supplies ≈ $60
Yearly upkeep$15–30Food, supplements, bulbs, power, vet fund
First year total$130–230All prices CAD, estimates

Bess beetle quick facts

Skill level
Beginner
Adult size
Body 3–4 cm
Lifespan
1–2 years (adult)
Activity
Nocturnal
Native range
Eastern North America
Minimum enclosure
30 × 20 × 20 cm (12 × 8 × 8 in, ≈ 3 US gal)
Housing
Up to 6 can share; add about 20% more floor space for each extra animal.
Temperature
18–25°C
Humidity
60–80%
UVB
Not needed
Diet
Detritivore – rotting hardwood
Bioactive style
Invertebrate colony

Bess beetle enclosure & bioactive setup

Give one adult at least 30 × 20 × 20 cm (12 × 8 × 8 inches). Up to 6 can share; add about 20% more floor space for each extra animal. This species suits a invertebrate colony bioactive build.

  1. Leaf litter2 cm
  2. Jurassic ABG Terrarium Mix10 cm

Leaf litter is food here, not decoration – keep a thick layer topped up. Keep one side damper than the other.

Temperature: 18–25°C. Humidity: 60–80%. UVB: Not needed.

What does a bess beetle eat?

Detritivore – rotting hardwood. Keep pieces of soft rotting hardwood (oak, maple) available at all times.

Handling, temperament & health

Gentle and great for handling; squeaks when disturbed.

Health watch: Declines without a constant supply of rotting wood.

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 bess beetle bioactive

Quantities are for one minimum-size enclosure (30 × 20 × 20 cm).

Bess beetle FAQ

Is the bess beetle good for beginners?

Yes – the bess beetle is a good choice for beginners. Gentle and great for handling; squeaks when disturbed.

What size enclosure does a bess beetle need?

At least 30 × 20 × 20 cm (about 12 × 8 × 8 inches, roughly 3 US gallons) for one adult. Up to 6 can share; add about 20% more floor space for each extra animal.

How much does a bess beetle cost in Canada?

Typically $15–30 CAD to buy, about $100–170 CAD for a complete bioactive enclosure, and $15–30 CAD a year to keep.

What temperature and humidity does a bess beetle need?

Temperature: 18–25°C. Humidity: 60–80%.

What does a bess beetle eat?

Detritivore – rotting hardwood. Keep pieces of soft rotting hardwood (oak, maple) available at all times.

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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.