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#4501 · 🦀 crabs & other crustaceans

Powder Blue Isopod

🇳🇱 Berijpte pissebed ·Porcellionides pruinosus

🦀 Crabs & other crustaceans 📍 in the Netherlands
Powder Blue Isopod, photo 1 of 10
1/10 © Ferran Turmo Gort · CC BY-NC-SA 4.0

what is it?

Porcellionides pruinosus is a cosmopolitan woodlouse that is native to Europe, and is suspected to consist of very closely related species. Ten subspecies are recognised. The species carries Wolbachia endosymbionts, which is an alpha-proteobacterium that is known to modify the reproduction of their crustacean hosts by inducing cytoplasmic incompatibility or feminisation.

base stats

  • NL sightings 4iNaturalist, research grade
  • worldwide 6,782iNaturalist observations

Bars compare against all animals on log scales: up to 300,000 Dutch and 600,000 worldwide sightings (the most-seen species), 150 t (blue whale), 30 m and 400 years (Greenland shark).

fun facts

  • Spotted 4 times in the Netherlands on iNaturalist.
  • 6,782 observations worldwide on iNaturalist.
  • Scientifically named by Johann Friedrich von Brandt in 1833 (193 years ago).

fact sheet

English
Powder Blue Isopod
Nederlands
Berijpte pissebed
scientific name
Porcellionides pruinosus
class
Malacostraca
order
Isopoda
family
Porcellionidae
sightings in NL
4
sightings in Europe
2,387
sightings worldwide
6,782
GBIF records in NL
284
weight
—
length
—
lifespan
—
named
1833 by Johann Friedrich von Brandt

relatives· Porcellionidae

Sources: iNaturalist taxon 126264, Wikidata Q2112139, GBIF 2211355, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

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