
Source: Wikimedia Commons
Oniscus asellus
A glossy European woodlouse found under rotting wood and stones almost everywhere in its range. The flat body has slightly flared edges, and juveniles show orange markings. Being temperate it needs no heating, which has made it a standard beginner species.
Oniscus asellus, named by Linnaeus in 1758, is a woodlouse of the British Isles and western and northern Europe that has also been introduced to Mexico and the eastern United States. Adults reach 16mm long and about 6mm wide, with a shiny brown-grey, relatively flat body whose edges flare slightly outwards. Juveniles look different, rough-surfaced and marked with orange. It is a classic synanthrope, living in gardens, walls and even inside houses. Being temperate it is easy to keep and needs no heating. Set up a gradient with one end damp and the other drier, and keep ventilation moderate. Build the floor from flake soil and rotted wood under a generous layer of leaf litter, which is the base of the diet rather than decoration. Keep cuttlebone permanently available and add a little protein now and then. Females carry eggs and then young in a brood pouch beneath the body, and the released juveniles colour up over successive moults. Like Porcellio scaber it cannot conglobate, relying on speed and cover instead.
Source: Wikipedia (CC BY-SA 4.0)
The Common Shiny Woodlouse lives 2-4 years.
The Common Shiny Woodlouse grows to Up to about 16mm.
Origin
Western and northern Europe (British Isles, Portugal to Sweden, east to Ukraine, the Azores and Madeira); introduced to the Americas
Lifespan
2-4 years
Size
Up to about 16mm
Sources: PostPods Oniscus asellus 'Orange' (care, breeding) / Insektenliebe Oniscus asellus 'Mardi Gras' / Wikipedia (size, distribution) / WoRMS
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.
Sources: CITES Appendices (species not listed)
Regulations may change. Always verify the latest information with the relevant authorities.
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Leaf litter and rotten wood as staples with a little vegetable, permanent calcium such as cuttlebone, and occasional protein
A temperate species that lives at room temperature with no heating. Keep one end damp and the other drier, with moderate ventilation.
Flake soil and rotted wood under a thick layer of leaf litter, with bark and wood for cover. A springtail culture in the same tub keeps mould down.
Leaf litter and rotten wood are the diet. Add a little vegetable and occasional protein, and keep cuttlebone in permanently.
Harmless and placid. Kept in groups, it breeds steadily once settled without any coaxing.
It cannot conglobate, so provide plenty of cover. Colour lines such as 'Mardi Gras' and 'Orange' are selected stock of this same species and are kept exactly like the wild type.
Beginner. This is a beginner-friendly species. No special equipment or experience is required, and it can be kept successfully with basic care setup.
The average lifespan of Common Shiny Woodlouse is 2-4 years. With proper care and nutrition, they can live a long and healthy life.
Common Shiny Woodlouse typically reaches Up to about 16mm as an adult. Size may vary depending on care conditions and individual genetics.
Common Shiny Woodlouse feeds on: Leaf litter and rotten wood as staples with a little vegetable, permanent calcium such as cuttlebone, and occasional protein. Aim for a balanced diet with appropriate feeding frequency.
The price of Common Shiny Woodlouse varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.
Last updated: September 17, 2026