Marbled pill woodlouse (Armadillidium granulatum)
Invertebrates · Difficulty: Beginner
Key facts and care guidance for Marbled pill woodlouse (Armadillidium granulatum) (origin: The Mediterranean). Adult size around 1,5–2 cm. Life expectancy 2–3 years. The values below are carefully researched guidance.
Short answers
Marbled pill woodlouse: How big does the enclosure need to be?
20×15×15 cm.
Marbled pill woodlouse: What temperature does it need?
Daytime 20–26 °C, basking spot No basking spot, at night 16–20 °C.
Marbled pill woodlouse: Does it need UVB lighting?
UVB: Not required.
Marbled pill woodlouse: How long do they live?
Life expectancy: 2–3 years.
Marbled pill woodlouse: Is it suitable for beginners?
Yes – it is considered suitable for beginners (difficulty: Beginner).
Climate
- Daytime temperature
- 20–26 °C
- Night temperature
- 16–20 °C
- Basking spot
- No basking spot
- Humidity
- 55–70 % with a dry zone
- UVB
- Not required
Enclosure
- Minimum size
- 20×15×15 cm
- Substrate
- A soil and leaf-litter mix, a calcium source, pieces of bark
Feeding
- Food
- Leaf litter, vegetables, fish food, cuttlebone
- Feeding interval
- 2×/week
Key facts
- Adult size
- 1,5–2 cm
- Life expectancy
- 2–3 years
- Origin
- The Mediterranean
- Protection status
- Not listed under CITES
- Brumation
- None
- Cohabitation
- Colony. Isopods are gregarious and are kept as a group – 10 to 15 animals to start; a single animal cannot breed. Only one species and one colour morph per tub: morphs interbreed back within two to three generations, and other species are crowded out over time or crowd this one out.
Notes
Strikingly marbled yellow and black, and easy to breed. Like all Armadillidium, offer a humidity gradient – one damp and one dry zone in the container.
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Related species
- Greek pill woodlouse (Armadillidium gestroi) – Beginner
- Common pill woodlouse (Armadillidium vulgare) – Beginner
- Clown isopod (Armadillidium klugii) – Beginner
- Nosy pill woodlouse (Armadillidium nasatum) – Beginner
- Werner's isopod (Armadillidium werneri) – Beginner to intermediate
- Zebra pill woodlouse (Armadillidium maculatum) – Beginner
- Little sea isopod (Cubaris murina) – Beginner
- Giant canyon isopod (Porcellio dilatatus) – Beginner
What you need to start
To keep Marbled pill woodlouse (Armadillidium granulatum) you typically need: a suitable enclosure (20×15×15 cm), substrate (A soil and leaf-litter mix, a calcium source, pieces of bark), a heat source with a thermostat, thermometer and hygrometer, a water dish and hides. You will find equipment in the Reptoria marketplace.
The complete, interactive care database is in the Reptoria app.
Last updated: 9 October 2026 · Editor: Reptoria editorial team · Sources include: https://en.wikipedia.org/wiki/Armadillidium_granulatum, https://en.wikipedia.org/wiki/Woodlouse, https://postpods.co.uk/blogs/isopods-useful-articles/care-for-armadillidium-isopods, https://postpods.co.uk/blogs/isopods-useful-articles/granulatum-isopod-care, https://postpods.co.uk/blogs/isopods-useful-articles/keeping-different-isopods-together
All values are non-binding guidance and do not replace expert advice. Research thoroughly from several sources before acquiring and keeping an animal, and observe the applicable law (species and animal protection in particular).