Androniscus dentiger

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Androniscus dentiger
Androniscus dentiger.jpg
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Isopoda
Family: Trichoniscidae
Genus: Androniscus
Species: A. dentiger
Binomial name
Androniscus dentiger
Verhoeff, 1908 [1]
Synonyms [2]
  • Androniscus africanus
  • Androniscus alpinus
  • Androniscus carli
  • Androniscus weberi
  • Androniscus wolfi
  • Itea dentiger
  • Stenasellus hazeltoni
  • Trichoniscus dentiger

Androniscus dentiger, the rosy woodlouse or pink woodlouse is a species of woodlouse found from the British Isles to North Africa.[3]


A. dentiger is a small woodlouse, at only 6 mm (¼ in) long, and is characteristically pink or orange in colour, with a yellow stripe along the midline of the dorsal surface,[4] which divides in two towards the animal's tail. It has large eyes for its size and a granular exoskeleton.[5]


In the British Isles, A. dentiger is found in a wide variety of habitats, including coastal areas, gardens, old quarries[4] and caves.[6] It lives where there is a significant amount of lime available, and is reported to show a preference for Anglican churchyards over Catholic ones because the older, Protestant churches used ox-blood mortar.[7]

In the south of its range, A. dentiger is primarily troglobitic, with populations in different cave systems being genetically isolated by the lack of migration between caves.[8] Animals like A. dentiger which prefer to live in caves, but are not restricted to the cave environment may be termed troglophilic.[9]

In North America, A. dentiger is only known to occur in greenhouses.[2]


According to some authors, A. dentiger may be considered a complex of sibling species or cryptic species .[3] Six subspecies are recognised:[1]

  • Androniscus dentiger africanus Arcangeli, 1939
  • Androniscus dentiger caecus Brian, 1938
  • Androniscus dentiger calcivagus Verhoeff, 1908
  • Androniscus dentiger croaticus Strouhal, 1939
  • Androniscus dentiger dentiger Verhoeff, 1908
  • Androniscus dentiger ligulifer Verhoeff, 1908

See also[edit]


  1. ^ a b "Androniscus dentiger Verhoeff, 1908". Integrated Taxonomic Information System. Retrieved November 7, 2010. 
  2. ^ a b Helmut Schmalfuss (2003). "World catalog of terrestrial isopods (Isopoda: Oniscidea) — revised and updated version" (PDF). Stuttgarter Beiträge zur Naturkunde, Serie A. 654: 341 pp. 
  3. ^ a b Gabriele Gentile; Giuliana Allegrucci (1997). "Geographic variation and genetic relationships in populations of the Androniscus dentiger complex from Central Italy (Isopoda, Oniscidea, Trichoniscidae)" (PDF). International Journal of Speleology. 26 (1–2): 47–61. doi:10.5038/1827-806x.26.1.5. Archived from the original (PDF) on 2011-07-22. 
  4. ^ a b "Woodlouse wizard — less common species". Natural History Museum. Retrieved February 19, 2009. 
  5. ^ Angelo Gross. "Androniscus dentiger — le cloporte rosâtre" (in French). 
  6. ^ "Life in the cave — Crustacea". Cambrian Caving Council. Retrieved November 7, 2010. 
  7. ^ Joe Kennedy (July 5, 2008). "Meeting Dublin's wildest residents: review of Wild Dublin by Eanna ni Lamhna". Irish Independent. 
  8. ^ Ivan H. Tuf; Karel Tajovský; Jan Mikula; Vratislav Laška; Roman Mlejnek. "Terrestrial isopods (Isopoda: Oniscidea) in and near the Zbrašov Aragonit Caves (Czech Republic)" (PDF). Proceedings of the International Symposium of Terrestrial Isopod Biology – ISTIB-07. I. Biodiversity & Systematics: 33–36. 
  9. ^ Lee Knight (2007). "Cave Life in Britain" (PDF). Freshwater Biological Association. Archived from the original (PDF) on 2011-07-17.