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Genus Armadillidium

pill bug? - Armadillidium nasatum Armadillidium vulgare 200404 Woodlouse - Armadillidium vulgare longish pill bug-looking creature - Armadillidium nasatum A. vulgare Isopod - Armadillidium vulgare porcellio scaber? - Armadillidium vulgare Pillbug - Armadillidium vulgare Wood Louse - Armadillidium nasatum
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Crustacea (Crustaceans)
Class Malacostraca (Malacostracans)
Superorder Peracarida (Peracarida (Amphipods and Isopods))
Order Isopoda (Isopods)
Suborder Oniscidea (Woodlice)
Infraorder Holoverticata
No Taxon (Orthogonopoda)
No Taxon (Crinocheta)
Family Armadillidiidae (Pillbugs)
Genus Armadillidium
Identification

In A. nasatum (left), the telson has a rounded tip. In A. vulgare (right), the telson is truncate, more trapezoidal.


A. vulgare, on the left, rolls into a perfect ball, while the tail of A. nasatum, on the right, sticks out when it rolls into an imperfect ball.


In A. vulgare (left), the scutellum barely projects. In A. nasatum (right), the scutellum projects.

For comparison:
A. nasatum; A. vulgare:


(1)(2)

Variation in A. nasatum:


Variation in A. vulgare:
Range
Worldwide, originally from Europe.
Internet References