Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes


pill bug? sow bug? - Armadillidium nasatum

pill bug? sow bug? - Armadillidium nasatum
Jim Thorpe, Carbon County, Pennsylvania, USA
May 8, 2008
Size: 15 mm

Moved from Woodlice.

Armadillidium nasatum
ID by Ferenc Vilisics

Thank-you! ^__^
Thank-you! ^__^

Sow bug
This is probably a sow bug from the family Porcellionidae, a group known as Porcellionids. These are a type of Crustacean called an Isopod (Order Isopoda), and are referred to as woodlice. They have seven pairs of legs. Pill bugs are in the same order, but a different family (Armadillidiidae). Female sow bugs have brood pouches to carry their eggs, as do pill bugs. Your specimen may be in the genus Porcellio.
Also don't confuse these with a Pill Millipede, a type of Myriapod. Pill millipedes are in the Class Diplopoda, Order Glomerida, and Family Glomeridae. They have 15 pairs of legs and roll up into a tight ball, just like pill woodlice.
Check out
for a good explanation.

Thnaks! I hope I moved it to
Thnaks! I hope I moved it to the right place.

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.