Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Class Malacostraca - Malacostracans

Armadillidium nasatum- Smithsonian National Museum of Natural History

Armadillidium vulgare - Smithsonian National Museum of Natural History

Walking with woodlice
A handy, simple and rough quide on the very common species trough the main characteristics on the pages of the Natural History Museum of London. Click on the "identification key". It's very good for beginners, I think.

There was also a survey on Isopod species in England, you can find info on the results, too.


An Introduction to the Crayfishes of Missouri
Hosted by the Missouri Department of Conservation, this is an on-line guidebook to 29 of the 35 species of crayfish known to occur in Missouri.

New Sandhoppers (Crustacea: Amphipoda) from the Gulf Coast of the United States
Bousfield, E.L. 1991. New Sandhoppers (Crustacea: Amphipoda) from the Gulf Coast of the United States. Gulf Research Reports 8(3): 271-283.

This open-access article includes a useful "Key to North American Genera of Sand-Burrowing Taltridae" - the key is somewhat technical (you have to know the names of the body parts).

For talitrid amphipod morphology, the following paper (also open-acces) gives a great introduction to the morphology, even though it is not focused on the North American fauna:

Fenwick, G. and R. Webber. 2008. Identification of New Zealand's terrestrial amphipods (Crustacea: Amphipoda: Talitridae). Tuhinga 19:29-56.

Wright J. (yyyy) Southern California Oniscidea

Wright J. (1997) Pillbugs
a detailed fact sheet with emphasis on SD fauna