Porcellionidae

Taxobox
name = Porcellionidae

---

image_caption = "Porcellio scaber"
regnum = Animalia
phylum = Arthropoda
subphylum = Crustacea
classis = Malacostraca
ordo = Isopoda
subordo = Oniscidea
familia = Porcellionidae
familia_authority = Brandt & Ratzeburg, 1831
subdivision_ranks = Genera
subdivision =
*"Caeroplastes"
*"Congocellio"
*"Dorypoditius"
*"Inchanga"
*"Leptotrichus"
*"Lucasius"
*"Mahehia"
*"Mexicostylus"
*"Mica"
*"Pondo (genus)"
*"Porcellio"
*"Porcellionides"
*"Proporcellio"
*"Soteriscus"
*"Thermocellio"
*"Tropicocellio"
*"Tura"
*"Uramba"

Porcellionidae is a terrestrial family of the order Isopoda. The species classified here cannot roll into a ball, as opposed to the species of family Armadillidiidae, which can.

This family contains 530 species in 17 genera, found on every continent except Antarctica.

Identification

The ventral plate of the thoracic exoskeleton flare out slightly over the legs. This "flare" is called the "epimeron". The uropods, antenna-like structures at the back of the specimen, are flattened out and spearlike, and extend beyond the last exoskeletal plate.