Insects & other Arthropods David A Kendall   BSc PhD
E-Mail: kendalluk@aol.com
Order Isopoda (Woodlice) Class: Crustacea

Most Isopoda live in marine or freshwater habitats, e.g. Sea Slaters, Water Slaters and Water Lice, but the Order also includes the only crustaceans, the Woodlice (Sub-order Oniscoidea), that have properly invaded land, without the need to return to water in order to breed, although they tend to be restricted to fairly damp places. Most Woodlice are flat oval creatures, with a grey or yellowish speckled back composed of 13 horny articulated plates. The head is quite small with a pair of angled, S-shaped antennae. There are seven pairs of short translucent legs, and a pair of very short caudal (or tail) appendages.

Garden Woodlouse
Oniscus sp. - Garden Woodlouse
b. up to 15 mm
Pill Woodlouse
Armadillidium sp. - Pill Woodlouse
b. up to 15 mm
Pill Woodlouse
Armadillidium sp. - Pill Woodlouse (rolled into ball)
b. up to 15 mm
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