Bug Identifier
Ground beetle
Community identification

Ground beetle

Likely *Pterostichus* or a related carabid; species-level identification requires closer views.

Order & Family
Coleoptera, family Carabidae
Size
Approximately 8–20 mm long, matching the pictured adult.
See this bug in the Encyclopedia

Natural Habitat

Usually found under stones, leaf litter, logs, and garden debris; some enter buildings while wandering or seeking shelter.

Diet & Feeding

Predatory, feeding mainly on caterpillars, insect larvae, slugs, snails, and other small invertebrates; some species also eat seeds.

Behavior Patterns

Mostly nocturnal and fast-running, with well-developed legs and occasional flight. Adults commonly overwinter in soil or sheltered crevices; larvae live in soil and leaf litter.

Risks & Benefits

Harmless to people and does not infest food or structures. Beneficial outdoors because it suppresses many garden and agricultural pests; it may emit an unpleasant defensive odor if handled.