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Marbled pill woodlouse (Armadillidium granulatum)

Marbled pill woodlouse (Armadillidium granulatum), typical appearance of the species

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

All species in the care wiki →

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).