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Haasi Isopod
IntermediatePorcellio haasi
A large Spanish woodlouse with yellow spots on dark brown. One of the few isopods with a 'giant' line clearly larger than the nominate form. Needs a dry setup with strong ventilation and hides under dead wood and moss.
Difficulty
Intermediate
Temperature
22〜27℃
Lifespan
1-2 years
Size
About 25mm (giant line about 35mm)
Humidity
45〜55%
Diet
Leaf litter and rotten wood as staples, with vegetables, fruit, protein about twice a week and a calcium source.
About
Porcellio haasi, described by Arcangeli in 1925, is a large Spanish woodlouse. The nominate form reaches about 25mm, while a captive-selected 'giant' line reaches about 35mm, making it one of the few isopods with a clearly larger line within the species. Yellow spots mark a dark brown ground, and bright, dark, 'High Yellow' and Bardenas-pattern lines are traded. Use a lid with a large vent or none at all, and moisten only one corner filled with leaf litter. By day it hides under dead wood and moss and flees from light. Feed leaf litter and rotten wood with vegetables, fruit, protein about twice a week and calcium. Breeding is fairly straightforward but seasonal, and juveniles take about nine months to mature.
Source: Wikipedia (CC BY-SA 4.0)
Lifespan of the Haasi Isopod
The Haasi Isopod lives 1-2 years.
Lifespan is 1-2 years.
Size of the Haasi Isopod
The Haasi Isopod grows to About 25mm (giant line about 35mm).
Temperature & humidity for the Haasi Isopod
The ideal temperature for the Haasi Isopod is 22〜27℃. Ideal humidity is 45〜55%.
Dryness and airflow are the keys to care: keep at 22-27C, slightly above room temperature, and at 45-55% humidity, lower than for most isopods.
Basic Info
Origin
Spain (including the Bardenas region)
Care Specifications
PeacefulGroupBreeding: Moderate
Sources: Insektenliebe keeping report (size, temperature, ventilation) / Exuvium Isopods (humidity, lifespan, feeding) / WoRMS
References & Sources
Edited & verified by: BreederDirect editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Taxonomy & Authority
Accepted name: Porcellio haasi Arcangeli, 1925
Authority databases: GBIF
Nomenclature follows global taxonomic authority databases.
Regulations & Conservation Status
Not CITES-listed
Sources: CITES Appendices (species not listed)
Regulations may change. Always verify the latest information with the relevant authorities.
Haasi Isopod Listings
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