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Common names for woodlice vary throughout the English-speaking world. A number of common names make reference to the fact that some species of woodlice can roll up into a ball. Other names compare the woodlouse to a pig. The collective noun is a quabble of woodlice. [9] Common names include:
Armadillidium vulgare Armadillidium vulgare in the rolled-up defensive posture characteristic of pill bugs Armadillidium pictum "Pill bugs" of the family Armadillidiidae are often confused with pill millipedes such as Glomeris marginata, which is also widespread and common in Britain and Ireland, but pill millipedes have two pairs of legs per body segment, while woodlice have only seven pairs ...
Like all species of Isopoda, Porcellio spinicornis develops directly from yolky eggs. Both the eggs and juveniles develop within a brood pouch called a marsupium until the first juvenile stage.
Isopoda is an order of crustaceans.Members of this group are called isopods and include both aquatic species, and terrestrial species such as woodlice.All have rigid, segmented exoskeletons, two pairs of antennae, seven pairs of jointed limbs on the thorax, and five pairs of branching appendages on the abdomen that are used in respiration.
Armadillidiidae is a family of woodlice, a terrestrial crustacean group in the order Isopoda.Unlike members of some other woodlice families, members of this family can roll into a ball, an ability they share with the outwardly similar but unrelated pill millipedes and other animals.
Armadillidium (/ ɑːr m ə d ɪ ˈ l ɪ d i ə m /) 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.
Porcellio scaber is found across Central and Western Europe. [5] In the United Kingdom, it is one of the "big five" species of woodlice.It has also colonised North America, South Africa and other regions including the remote sub-Antarctic Marion island, largely through human activity. [6]
The anatomy of H. reaumuri is not specialised for digging, and the excavation is a slow process, taking place only in early spring. [8] The first 3–5 centimetres (1.2–2.0 in) are dug by a single woodlouse, which then stops to guard the new burrow.