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Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Cladus: Pancrustacea
Superclassis: Multicrustacea
Classis: Malacostraca
Subclassis: Eumalacostraca
Superordo: Peracarida
Ordo: Isopoda
Cladus: Scutocoxifera
Subordo: Oniscidea
Infraordo: Ligiamorpha
Superfamilia: Armadilloidea
Familia: Armadillidiidae
Genus: Armadillidium
Species: Armadillidium vulgare
Subspecies: A. v. rufobrunneus –
Name

Armadillidium vulgare (Latreille, 1804)
References
Additional references

Chilton, C. 1905: Notes on the distribution of some species of terrestrial Isopoda introduced into Australasia. Annals and magazine of natural history (7), 16: 428–432. BUGZ
Nako, J-D., Lee, N.S. & Wright, J.C. 2018. Water vapor absorption allows for volume expansion during molting in Armadillidium vulgare and Porcellio dilatatus (Crustacea, Isopoda, Oniscidea). Pp 459–479 In: Hornung, E., Taiti, S. & Szlavecz, K. (Eds.). Isopods in a Changing World. ZooKeys 801: 1–518. Reference page. . DOI: 10.3897/zookeys.801.23344 Reference page.
Scott, R.R. 1984: The isopod fauna of some Auckland reserves and areas of native vegetation. Tane, 30: 227–233. BUGZ PDF

Links

Armadillidium vulgare (Latreille, 1804) – Taxon details on Integrated Taxonomic Information System (ITIS).

Vernacular names
aragonés: tocinet
English: pillbug
français: cloporte vulgaire
日本語: オカダンゴムシ
português: tatuzinho, bicho-de-conta, papa-breu
Türkçe: tespih böceği
中文: 鼠婦

Armadillidium vulgare, the common pill-bug, potato bug, common pill woodlouse, roly-poly, slater, doodle bug, or carpenter, is a widespread European species of woodlouse. It is the most extensively investigated terrestrial isopod species.[2]
Description

Armadillidium vulgare may reach a length of 18 millimetres (11⁄16 in), and is capable of rolling into a ball when disturbed; this ability, along with its general appearance, gives it the name pill-bug and also creates the potential for confusion with pill millipedes such as Glomeris marginata.[3] It can be distinguished from Armadillidium nasatum and Armadillidium depressum by the gap that A. nasatum and A. depressum leave when rolling into a ball; A. vulgare does not leave such a gap.[4]
Ecology

Armadillidium vulgare is able to withstand drier conditions than many other woodlouse species, and is restricted to calcareous soils or coastal areas.[3] It feeds chiefly on decaying plant matter, but also grazes lichens and algae from tree bark and walls.[5]

It is able to regulate its temperature through its behaviour, preferring bright sunshine when temperatures are low, but remaining in shadow when temperatures are high; temperatures below −2 °C (28 °F) or above 36 °C (97 °F) are lethal to it.[6] A. vulgare is less susceptible to cold during the night, and may enter a state of dormancy during the winter in order to survive temperatures that would otherwise be lethal.[6]
Distribution

The native distribution of A. vulgare ranges across Europe, especially in the Mediterranean Basin.[2] In the United Kingdom, A. vulgare is very common in southern and eastern England, but is more confined to coastal areas in the north.[7] Similarly, in Ireland, A. vulgare is common in the south and east, but rarer in the north and west.[7]

A. vulgare has also been introduced to many locations in North America, where it may reach population densities of up to 10,000 individuals per square metre (900 individuals per square foot).[8] It is now one of the most abundant invertebrate species in California coastal grassland habitats.[9] It has also been introduced, to a lesser extent, to sites across the world.[2]
Relationships with humans

Because of their unusual yet non-threatening appearance, some Armadillidium vulgare are kept as pets in areas throughout the world. Different lineages are bred, usually in regards to color, in order to provide stock to hobbyists. One supposed variation, "Punta Cana," is often referred to as Armadillidium sordidum, while others insist it is a variety of A. vulgare.[10] Keeping a pet pill bug requires a very moist habitat with limited light and abundant decaying botanical matter.[11] They can often live up to three years.[12] Among non-hobbyist adults, they are often seen as unwanted (but essentially harmless) home pests.[12]
Mitochondrial genome

Most metazoans have circular mitochondrial genomes, but A.vulgare has an unusual combination of both circular and linear mitochondrial DNA.[13]

References

"Armadillidium vulgare". Integrated Taxonomic Information System.
Helmut Schmalfuss (2003). "World catalog of terrestrial isopods (Isopoda: Oniscidea) — revised and updated version" (PDF). Stuttgarter Beiträge zur Naturkunde, Serie A. 654: 341 pp. Archived from the original (PDF) on 2009-02-24. Retrieved 2009-02-13.
"Pill woodlouse (Armadillidium vulgare)". ARKive.org. Archived from the original on 2009-09-03. Retrieved February 13, 2009.
"Woodlouse Wizard: an identification key". Natural History Museum. Retrieved August 20, 2014.
"Common pill woodlouse — Armadillidium vulgare". Natural England. Archived from the original on July 20, 2011. Retrieved August 30, 2014.
Roberto Refinetti (1984). "Behavioral temperature regulation in the pill bug, Armadillidium vulgare (Isopoda)". Crustaceana. 47 (1): 29–43. doi:10.1163/156854084X00298.
"Armadillidium vulgare". Natural History Museum. Archived from the original on October 16, 2012. Retrieved November 7, 2010.
Jan Frouza; Richard Lobinske; Jirí Kalcík; Arshad Ali (2008). "Effects of the exotic crustacean, Armadillidium vulgare (Isopoda), and other macrofauna on organic matter dynamics in soil microcosms in a hardwood forest in central Florida". The Florida Entomologist. 91 (2): 328–331. doi:10.1653/0015-4040(2008)91[328:EOTECA]2.0.CO;2.
Oscar H. Paris (1963). "The ecology of Armadillidium vulgare (Isopoda: Oniscoidea) in California grassland: food, enemies, and weather". Ecological Monographs. Ecological Society of America. 33 (1): 1–22. doi:10.2307/1948475. JSTOR 1948475.
"Armadillidium vulgare var. "Punta Cana"". Archived from the original on May 29, 2019. Retrieved May 29, 2019.
Stanley A. Schultz & Marguerite J. Schultz (2009). The Tarantula Keeper's Guide: Comprehensive Information on Care, Housing, and Feeding. Barron's Educational Series. pp. 181–183. ISBN 978-0-7641-3885-0.
Smith-Rogers, Sheryl (October 2009). "Wild Thing: Roly-Poly Pillbugs". TPW Magazine. Retrieved July 10, 2010.
Marcadé, Isabelle; Cordaux, Richard; Doublet, Vincent; Debenest, Catherine; Bouchon, Didier; Raimond, Roland (2007). "Structure and Evolution of the Atypical Mitochondrial Genome of Armadillidium vulgare (Isopoda, Crustacea)". Journal of Molecular Evolution. 65 (6): 651–9. Bibcode:2007JMolE..65..651M. CiteSeerX 10.1.1.688.9796. doi:10.1007/s00239-007-9037-5. PMID 17906827. S2CID 25325865.

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