Cristarmadillidium "Muricatum"

Product Description

Cristarmadillidium muricatum (The "Spanish Spiky" Isopod) is a legendary species that looks like a miniature dragon or a prehistoric relic. Native to specific regions of Spain, this isopod is world-famous for its dramatic, spiny exoskeleton. Every segment of its body is adorned with small, pointed protrusions (tubercles) that give it a "thorny" and incredibly textured appearance.

Despite its aggressive, armored look, C. muricatum is a peaceful and fascinating rolling species. When threatened, it curls into a perfect, spiky ball, making it nearly impossible for small predators to handle. They are typically a beautiful earthy brown to tan color, which provides excellent camouflage against leaf litter and soil. While they are a slower-growing species, their unique "medieval armor" aesthetic makes them the crown jewel of any specialized isopod collection.

Perfect for prehistoric or "dragon" themed displays, advanced Mediterranean collections, and enthusiasts who appreciate the most extreme morphologies in the hobby.

Species Information

• Species: Cristarmadillidium muricatum
• Common Name: Spanish Spiky Isopod / Pineapple Isopod
• Origin: Spain (Mediterranean region)
• Size: ~1.0–1.4 cm (Small to medium but visually massive due to spines)
• Activity Level: Moderate / Reclusive
• Rarity: Rare / High-End Collector Choice

Care Requirements

• Difficulty: Moderate to Advanced (Requires very specific ventilation and moisture balance)
• Humidity: Low to Medium. They are extremely sensitive to "wet" or stagnant conditions. Maintain a strict moisture gradient: 70% of the enclosure should be bone-dry, with one small, dedicated corner of damp (not soaking) moss.
• Temperature: 20–26°C (68–79°F). They prefer stable, warm conditions.
• Ventilation: High/Maximum. Excellent cross-ventilation is mandatory. If the air becomes stagnant, this species will not thrive.
• Substrate: Arid-mix organic soil enriched with calcium and crushed limestone.

Must Provide:

• Textured Hides: Small pieces of cork bark or limestone rocks.
• Abundant Hardwood Leaf Litter: Oak and Beech are essential for cover and food.
• A tiny, consistently damp "hydration station."
• Constant access to high-quality calcium (cuttlebone).

Origin and Distribution

Cristarmadillidium muricatum is native to Spain, specifically inhabiting the dry, rocky Mediterranean scrublands (Garrigue).

In the wild, they are "lithophilic" (stone-loving) and are often found clinging to the underside of limestone rocks or buried deep in dry leaf litter. Their spines are thought to be a specialized defense mechanism, making them unpalatable to small predators like spiders or ants. Because they come from such specific microclimates, they appreciate a keeper who provides a very stable and well-ventilated environment.

Diet

• Primary: They primarily feed on dry leaf litter and decaying white-rotted wood.
• Protein: Low to Moderate demand. Provide fish flakes or dried shrimp once a week.
• Vitamins: Occasional fresh vegetables like squash or sweet potato.
• Calcium: Critically Important. Their complex, spiky shells require a constant and high supply of calcium to develop correctly during molts.

What You Receive

• Starter culture of X Cristarmadillidium muricatum isopods.
• Mixed sizes (juveniles and sub-adults) to ensure a strong and stable colony start.

Why Buy From Us

✔ Authentically sourced, healthy captive-bred "Spiky" stock.

✔ Specialized packaging to protect their delicate spines during transit.

✔ Expert advice to help you succeed with one of the most unique isopods in existence.