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



Species Ligia occidentalis - Western Seaslater

Aquatic Isopod - Ligia occidentalis Ligia occidentalis - male intertidal isopod - Ligia occidentalis Ligiidae species? - Ligia occidentalis Ligiidae species? - Ligia occidentalis Ligia occidentalis Ligia occidentalis, reportedly - Ligia occidentalis Another L. occidentalis, reportedly - Ligia occidentalis
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 Diplocheta
Family Ligiidae (Seaslaters and Rockslaters)
Genus Ligia (Seaslaters)
Species occidentalis (Western Seaslater)
Explanation of Names
Ligia occidentalis Dana 1853
distinguished from L. pallasi by the much longer uropods; eyes larger & closer together (1 eye diameter apart); body much sleeker; and the tendency to bolt when disturbed
central CA; Vancouver, BC area (introduced)