Armadillidium is a genus of the small terrestrial crustacean known as the woodlouse. Armadillidium are also commonly known as pill woodlice, leg pebbles, pill bugs, roly-poly, or potato bugs, and are often confused with pill millipedes such as Glomeris marginata. They are characterised by their ability to roll into a ball ("volvation") when disturbed.
Porcellionidae is a terrestrial family of the order Isopoda.
Styloniscus is a genus of woodlice in the family Styloniscidae. It contains the following species as of 2010:
Porcellio is a genus of woodlice in the family Porcellionidae. These crustaceans are found essentially worldwide. A well-known species is the common rough woodlouse, Porcellio scaber.
Trichoniscus is a genus of woodlice. It contains over 100 species, including the common pygmy woodlouse, Trichoniscus pusillus:
Porcellionides is a genus of woodlice in the family Porcellionidae. It includes the following species :
Platyarthridae is a family of woodlice, containing the following genera:
Trachelipus is a genus of woodlice in the family Trachelipodidae, containing the following species:
Armadillidae is a family of woodlice, comprising around 80 genera and 700 species. It is the largest family of Oniscidea, and one of the most species-rich families of the entire Isopoda. Armadillids generally have a strongly convex body shape, with some rather shallowly convex. Like members of the woodlice family Armadillidiidae, armadillids are capable of enrolling into a sphere (conglobation), and are commonly known as pill bugs. Armadillids differ from the Armadillidiidae in that the antennae are fully enclosed within the sphere.
Scleropactidae is a family of woodlice, with a predominantly Gondwanan distribution. It contains the following genera:
Niambia is a genus of woodlice in the family Platyarthridae. There are at least 20 described species in Niambia.
Tylos is a genus of woodlice in the family Tylidae. There are at least 20 described species in Tylos. All the species in this family can roll up into a perfect ball and live on sandy beaches.
Armadilloniscus is a genus of woodlice in the family Detonidae. There are more than 30 described species in Armadilloniscus.
Platyarthrus is a genus of woodlice in the family Platyarthridae. There are more than 30 described species in Platyarthrus.
Cylisticus is a genus of woodlice in the family Cylisticidae. There are at least 70 described species in Cylisticus.
Alpioniscus is a southern European genus of woodlice in the family Trichoniscidae. Alpioniscus consists of two subgenera: Alpioniscus s.s. and Illyrionethes. A 2019 study used molecular and taxonomic analyses to verify the validity of the current taxonomy, resulting in the redescription of several species and the description of two new species.
Philoscia is a genus of woodlice in the family Philosciidae. There are more than 80 described species in Philoscia.
Eubelidae is a family of isopods belonging to the order Isopoda. It contains the following genera:
Bathytropidae is a family of crustaceans belonging to the order Isopoda.
