Armadillidium nasatum

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Armadillidium nasatum
Armadillidium nasatum 04.jpg
Armadillidium nasatum, in standard posture (above) and conglobated (below)
Scientific classification edit
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Superorder: Peracarida
Order: Isopoda
Suborder: Oniscidea
Family: Armadillidiidae
Genus: Armadillidium
Species:
A. nasatum
Binomial name
Armadillidium nasatum
Subspecies

Five subspecies

Armadillidium nasatum range.png
Range (UK only)[2][3]
Synonyms [4]
  • Armadillidium mehelyi
  • Armadillidium nasutum
  • Armadillidium quadrifrons
  • Armadillidium sorrentinum
  • Armadillidium speyeri

Armadillidium nasatum is a large, Western European-based species of woodlouse that has been introduced to North America, along with Armadillidium vulgare also found in other parts of Europe.

Description[]

Morphological comparison between Armadillidium nasatum and A. vulgare

Armadillidium nasatum can reach lengths of up to 21 millimetres.[2][5] Though similar in outwards appearance to Armadillidium vulgare in dark grey color, the main distinguishing feature is pale longitudinal stripes spanning from head to rear and rectangular-like protrusion towards the apex of the head. Like Armadillidium depressum, it does not form a complete ball when enrolled.[2] The tail has a rounded tip with incurved sides, as opposed to most genus Armadillidium species which have a flat tail.[5]

Distribution[]

Armadillidium nasatum occurs in patches in southern England, with concentrated areas in its range and sporadic occurrences in Ireland.[2] It lives in dryer areas than most woodlice, is synanthropic, and is frequently found in non-inhabited areas such as railway lines and industrial waste ground.[2] Like other woodlice, it is found under stones and wood.

Subspecies[]

There are five recognized subspecies in the species Armadillidium nasatum:[1]

  • Colinge, 1989
  • Verhoeff, 1930
  • Budde-Lund, 1885
  • Collinge, 1918
  • Arcangeli, 1950

References[]

  1. ^ a b "Armadillidium nasatum Budde-Lund, 1885". Integrated Taxonomic Information System. Retrieved August 2, 2015.
  2. ^ a b c d e Armadillidium nasatum Budde-Lund, 1885
  3. ^ http://www.nhm.ac.uk/nature-online/life/other-invertebrates/walking-with-woodlice/results/old/armadillidium_nasatum.html
  4. ^ 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 2015-08-02.
  5. ^ a b Powerpoint Presentation - nasatum.pdf

External links[]

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