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Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

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Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

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Family Armadillidiidae - European Pillbugs

Roly Poly - Armadillidium vulgare Isopod of some type.. - Armadillidium vulgare Armadillidiidae? - Armadillidium vulgare Red Armadillidium vulgare mutation? - Armadillidium vulgare Armadillidium vulgare? - Armadillidium vulgare pill millipide or pill bug? - Armadillidium vulgare 3031816 pillbug - Armadillidium vulgare Common Pill Bug (Roly Poly) - Posterior Dorsal - Armadillidium vulgare
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Crustacea (Crustaceans)
Class Malacostraca (Malacostracans)
Superorder Peracarida (Marsupial Crustaceans)
Order Isopoda (Isopods)
No Taxon (Scutocoxifera)
Suborder Oniscidea (Woodlice)
Infraorder Holoverticata
No Taxon (Orthogonopoda)
No Taxon (Crinocheta)
Family Armadillidiidae (European Pillbugs)
Numbers
2 species in a single genus in our area (both introduced)
Numerous species in Eurasia where they are native
Identification
In Armadillidiidae the tails (uropods) are shorter than the last abdominal segment. (1)
American species of Armadillidae (note the number of d’s) have hourglass-shaped telson, while Armadillidium has triangular- or trapezoidal-shaped telsons
Most other families can not roll into a ball and have tails longer than the last abdominal segment.
In the following image Porcellio scaber is in the family Porcellionidae and Armadillidium nasatum is in the family Armadillidiidae. Note the length of the tails in each.

Range
Native to Europe + North Africa and parts of West Asia, 3 species introduced worldwide
Internet References
adult image of Armadillidium nasatum and photos of 2 other species not in Armadillidiidae (Scott Baird, Wright State U., Ohio)
classification and list of worldwide genera (ITIS)
Works Cited
1.Spiders and Their Kin: A Golden Guide from St. Martin's Press
Herbert W. Levi, Lorna R. Levi, Nicholas Strekalovsky. 2001. St. Martin's Press.