pillbugs

Curl into balls

Pillbugs are small crustaceans that live on land, found in damp places under rocks, logs, and leaf litter.

They have segmented, armored bodies and can roll into a tight ball when disturbed—hence the name.

Also called roly-polies, woodlice, or sowbugs, though sowbugs technically cannot roll up.

Despite their bug designation, they're more closely related to shrimp and crabs than to insects.

taxonomy

isopod

Seven-legged-pair crustacean

invertebrate · species · family · order · classification

childhood

roly-poly

Plump and round

garden · fascination · pet · exploration · curiosity · nickname · cute · harmless · handling · observation

anatomy

exoskeleton

External skeletal structure

molting · carapace · armor · plating · banded · articulated · gills · mandible · multilegged · marsupium

habitat

soil

Ground matter for planting

decaying wood · mulch · damp · moisture · rotting logs · rocks · flowerpots · basement · humid · shelter

ecology

detritivore

Eats dead organic material

recycling · humus · microorganisms · fungi · bacteria · decay · breakdown · soil health · beneficial · saprophyte

defense

curling

Forming curved shapes

  • ballSpherical plaything or gala
  • rolledRotated or turned over
  • armorProtective combat covering

protective · shielding · retractable · encased · hardened · shell · tucked · spherical · startled · disturbed

Categories
Opposites
taxonomic classification

pillbugsbeetles

Hard-winged insects

ants · flies · grasshoppers · butterflies · cockroaches

habitat moisture preference

pillbugsscorpions

Venomous tailed arachnids

aquatic vs terrestrial crustaceans

pillbugslobsters

Large edible sea crustaceans

crabs · shrimp · crayfish · barnacles · krill

Family

pillbug

Familiarity
Top 500,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G