Woodlouse
( Armadillidium vulgare )


2010-0403-01010030-CRU00419-Armadillidium_vulgare[1220h18s,F,A,plant-foliage]{EXD}-G.jpg

PHOTO COMMENT

IDENTIFICATION
Identification:Armadillidium vulgare
(Latreille ,1804 )
Common Name:Woodlouse
Life Stage:(A) adult

PHYLOGENY

Phylum:Arthropoda
Class:Malacostraca
Superorder:Peracarida
Order:Isopoda
Suborder:Oniscidea
Family:Armadillidiidae
Genus:Armadillidium
Taxon Code:CRU00419
ITIS/TSN:93250

LOCATION DETAILS
Location Name
Alameda, Alameda, 2801 Sea View Parkway, Alameda
County:Alameda County
ECI Site#:CA01010030

RECOGNITION
Description
The telson is trapezoidal. Color is dark grey color with yellow patches, margins are never white. The head has no significant middle lobe.
Body Length
18 mm.

BIOLOGY
Pillbugs and Sowbugs have 14 pairs of legs. Known locally as potato bugs or roly polies, these are actually crustaceans. They are more closely related to shrimps, crabs and lobsters than to insects. They feed on decaying organic matter on the ground or in trees. When threatened they can roll themselves into a protective ball. Sowbugs, are closely related, but are flatter and cannot roll into a ball. Females of both bear live young which look like the adult.
Habitat
Humid places under stones, bricks, or logs.
Distribution
This species was introduced worldwide and is widely distributed in America north of Mexico.

CREDITS
Photographer
Eddie Dunbar
Insect Sciences Museum of California

References
Species Armadillidium vulgare - Woodlouse. (http://bugguide.net/node/view/94180). Accessed March 12, 2016. .
ITIS.


.