Field identity
Expansus Isopods (Porcellio expansus)
Porcellio expansus
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Expansus Isopods (Porcellio expansus)
$24.99 -
$649.99
A giant among isopods.
Expansus isopods (Porcellio expansus) are known for their sheer size and dramatically flared body plates, making them one of the most impressive Porcellio species a keeper can house. Coming from Spain, they lean dry and want very high calcium to support that heavy exoskeleton. Kept at 68 to 78F with humidity around 45 to 65%, this is a rewarding project for an experienced keeper with an advanced substrate setup already dialed in.
- One of the largest Porcellio species available
- Dramatic, heavily flared body armor
- Very high calcium needs for shell development
- Best suited to keepers with advanced substrate experience
Covered by our Live Arrival Guarantee.
Care Snapshot
| Climate | Semi-arid |
| Temperature | 68 to 78 F |
| Humidity | 45 to 65% |
| Adult size | 25 to 35 mm |
| Origin | Spain |
| Care level | advanced |
The keeper's royal chronicles
Expansus Isopod Care Quest
Prepare a refuge for Porcellio expansus. Follow the care sheet for habitat, moisture, feeding and everyday colony care.
Read the care sheet →Know your colony
Care and Keeper Confidence
An active Porcellio listing. Compare the stated moisture, ventilation, and temperature fields because needs vary meaningfully across the genus.
Best matched for
Keepers who value visible activity and a substantial display colony.
Keeper caution
Do not copy care ranges from a different Porcellio species or morph.
Direct answers
Before this colony arrives
Prepare the refuge, gather provisions, and plan your first days as colony keeper.
What should I prepare?
Stabilize the enclosure before ordering. Use the temperature and moisture fields above when they are shown, and provide species-appropriate substrate, leaf litter, hides, calcium, and ventilation.
How should I compare this listing?
Keepers who value visible activity and a substantial display colony. Do not copy care ranges from a different Porcellio species or morph.
What will my selected option mean?
The selected product option is carried into the cart and checkout. Review the option label, price, and current availability directly above before placing the order.
Where can I ask a species question?
Contact keeper support with the product name and your planned enclosure. We can help you choose the next step.