Yellow-spotted pill bug (Armadillidium gestroi)
Photo: (c) milan kořínek, some rights reserved (CC BY) / CC BY 4.0 · via Wikimedia Commons

Invertebrate · Isopod

Yellow-spotted pill bug care guide

Armadillidium gestroi

Intermediate

The yellow-spotted pill bug is a intermediate-level isopod from NW Italy, SE France. Adults reach Body 1.5–2 cm and live 2–3 years in captivity. Black and yellow pill bug that prefers a drier, well-ventilated setup.

  • Enclosure 30 × 20 × 20 cm
  • Temp 18–25°C
  • Humidity 50–70% with a dry end

How much does a yellow-spotted pill bug cost in Canada?

Animal$50–100Typical captive-bred price
Bioactive enclosure$100–170Enclosure $30–60 · equipment $20–40 · bioactive supplies ≈ $60
Yearly upkeep$20–50Food, supplements, bulbs, power, vet fund
First year total$170–320All prices CAD, estimates

Yellow-spotted pill bug quick facts

Skill level
Intermediate
Adult size
Body 1.5–2 cm
Lifespan
2–3 years
Activity
Nocturnal
Native range
NW Italy, SE France
Minimum enclosure
30 × 20 × 20 cm (12 × 8 × 8 in, ≈ 3 US gal)
Housing
A colony species – best kept in a group.
Temperature
18–25°C
Humidity
50–70% with a dry end
UVB
Not needed
Diet
Detritivore – leaf litter, rotting wood, vegetables, calcium
Bioactive style
Invertebrate colony

Yellow-spotted pill bug enclosure & bioactive setup

Give one adult at least 30 × 20 × 20 cm (12 × 8 × 8 inches). A colony species – best kept in a group. This species suits a invertebrate colony bioactive build.

  1. Leaf litter2 cm
  2. Jurassic ABG Terrarium Mix8 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: 50–70% with a dry end. UVB: Not needed.

What does a yellow-spotted pill bug eat?

Detritivore – leaf litter, rotting wood, vegetables, calcium. Keep leaf litter and calcium available and add vegetables and protein weekly.

Handling, temperament & health

Rolls into a ball; handle gently.

Health watch: Prone to losses in overly wet, stagnant enclosures.

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 yellow-spotted pill bug bioactive

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

Yellow-spotted pill bug FAQ

Is the yellow-spotted pill bug good for beginners?

The yellow-spotted pill bug is best for keepers with some experience (intermediate). Rolls into a ball; handle gently.

What size enclosure does a yellow-spotted pill bug need?

At least 30 × 20 × 20 cm (about 12 × 8 × 8 inches, roughly 3 US gallons) for one adult. A colony species – best kept in a group.

How much does a yellow-spotted pill bug cost in Canada?

Typically $50–100 CAD to buy, about $100–170 CAD for a complete bioactive enclosure, and $20–50 CAD a year to keep.

What temperature and humidity does a yellow-spotted pill bug need?

Temperature: 18–25°C. Humidity: 50–70% with a dry end.

What does a yellow-spotted pill bug eat?

Detritivore – leaf litter, rotting wood, vegetables, calcium. Keep leaf litter and calcium available and add vegetables and protein weekly.

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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.