Introduction
Armadillidium isopods are the classic “pill bugs” — the ones that roll into a perfect ball when disturbed. But don’t let their familiar appearance fool you; this genus contains some of the most visually spectacular and rewarding species in the hobby. From the bold stripes of the Zebra to the otherworldly patterning of the Magic Potion, Armadillidium offer something for every level of keeper.
In this guide we’ll cover everything you need to keep your Armadillidium thriving, with specific notes on each species we stock.
About Armadillidium
Armadillidium are native to the Mediterranean and Europe, and unlike most other isopod genera, they are true “pill bugs” — capable of fully rolling into a ball (conglobation) as a defence mechanism. They tend to prefer slightly drier and more alkaline conditions than Porcellio or Cubaris, and have a higher calcium requirement than most other species. They are generally considered intermediate keepers — more demanding than Porcellio laevis but very rewarding once established.
The species we stock are:
- Zebra (Armadillidium maculatum) — classic black and cream striped patterning
- Chocolate Zebra (Armadillidium maculatum) — rich brown and cream morph
- Champagne Zebra (Armadillidium maculatum) — pale, elegant champagne and cream morph
- Clown (Armadillidium klugii) — striking orange, black and white patterning
- Magic Potion (Armadillidium vulgare) — rare, iridescent morph of the common pill bug
- Greek Speckled (Armadillidium peraccae) — subtle speckled patterning from Greece
Enclosure
- A well-ventilated tub or tank with good airflow — Armadillidium do better with more ventilation than Cubaris
- Secure lid essential — they are good escape artists
- A moisture gradient is important — moist on one side, drier on the other
- Limestone or slate decor suits their natural habitat and provides calcium
- See our full How to Set Up an Isopod Enclosure guide for a step-by-step walkthrough
Substrate
Armadillidium need a calcium-rich, well-draining substrate:
- Organic compost as your base — 8–12cm deep to allow burrowing
- Crushed limestone or oyster shell mixed throughout — calcium is critical for moulting
- Worm castings — nutrition and microfauna
- Leaf litter — food and structure on the surface
- Rotten wood — hides and slow-release food
- Cuttlebone always available on the surface
Maintain a moisture gradient — wet one side, dry the other. Armadillidium will self-regulate but need both options.
Temperature & Humidity
- Temperature: 18–24°C — most species tolerate UK room temperature well, though warmer conditions encourage breeding
- Humidity: Moderate — maintain a wet side but allow a dry area
- A. klugii (Clown) prefers slightly warmer conditions (22–26°C) and is more sensitive to cold
- A. vulgare Magic Potion is the most temperature-tolerant of the group
Feeding
- Leaf litter as a staple — oak, beech, and magnolia are ideal
- Vegetables: courgette, carrot, sweet potato, cucumber (remove within 48 hours)
- Calcium: crushed oyster shell, cuttlebone, and limestone always available — this is non-negotiable for Armadillidium
- Protein: fish flakes or dried shrimp once or twice a week
- Botanicals: they love foraging on Bakuli pods, Alder cones, and Casuarina cones
Breeding
Armadillidium are generally slower breeders than Porcellio species, though the Zebra (A. maculatum) and Greek Speckled (A. peraccae) are notable exceptions — both breed at a faster rate than typical for the genus. Females carry eggs in a brood pouch (marsupium) and release fully formed mancae — typically 10–30 per brood. Warmth, calcium availability, and stable humidity are the key factors for encouraging breeding.
Species Comparison
| Zebra | Chocolate Zebra | Champagne Zebra | Clown | Magic Potion | Greek Speckled | |
|---|---|---|---|---|---|---|
| Species | A. maculatum | A. maculatum | A. maculatum | A. klugii | A. vulgare | A. peraccae |
| Size | Medium | Medium | Medium | Medium | Medium | Small–medium |
| Difficulty | Intermediate | Intermediate | Intermediate | Intermediate–Advanced | Intermediate | Intermediate |
| Temperature | 18–24°C | 18–24°C | 18–24°C | 22–26°C | 18–25°C | 18–24°C |
| Humidity | Moderate | Moderate | Moderate | Moderate–High | Moderate | Moderate |
| Breeding speed | Fast | Slow–moderate | Slow–moderate | Slow | Moderate | Fast |
Tips for Success
- Calcium is everything — the number one cause of moulting deaths in Armadillidium is calcium deficiency. Keep cuttlebone and oyster shell available at all times
- Allow a dry area — unlike Cubaris, Armadillidium will stress in constantly saturated conditions
- Don’t disturb moulting isopods — they are vulnerable and need to re-harden
- Add springtails to keep the enclosure clean
- A. klugii Clown needs supplemental heat in UK homes — treat it like Cubaris for temperature
- If you want a fast-establishing colony, the Zebra and Greek Speckled are your best starting point within this genus
Quick Reference
| Care Factor | Details |
|---|---|
| Genera | Armadillidium maculatum, A. klugii, A. vulgare, A. peraccae |
| Temperature | 18–24°C (Clown: 22–26°C) |
| Humidity | Moderate — moisture gradient essential |
| Substrate | Organic compost, crushed limestone/oyster shell, leaf litter, rotten wood — 8–12cm |
| Feeding | Leaf litter, veg, protein, calcium always available |
| Breeding | Fast (Zebra, Greek Speckled); slow–moderate (others) |
| Difficulty | Intermediate |
Final Thoughts
Armadillidium are fascinating, characterful isopods that reward patient, attentive keepers. Get the calcium right, provide a moisture gradient, and keep them warm — and you’ll have a thriving colony of one of the hobby’s most iconic genera. Shop our full range: Zebra, Chocolate Zebra, Champagne Zebra, Clown, Magic Potion, and Greek Speckled — all UK-bred with our Live Arrival Guarantee.