Bug Identifier
Ground beetle
Community identification

Ground beetle

Carabidae, likely an unidentified species

Order & Family
Coleoptera; Carabidae
Size
Typically 3–40 mm (0.1–1.6 in), depending on species; this specimen appears about 15–20 mm long.
See this bug in the Encyclopedia

Natural Habitat

Ground beetles live under stones, leaf litter, logs, mulch, and around garden or shoreline vegetation. This individual may be near water accidentally or using the dock as shelter.

Diet & Feeding

Mostly predatory, eating caterpillars, beetle larvae, slugs, snails, and other small invertebrates; some species also consume seeds or plant matter.

Behavior Patterns

Usually nocturnal and fast-moving, hiding during daylight. Most do not fly often, though many species can; adults overwinter in soil or protected crevices and reproduce seasonally.

Risks & Benefits

Generally harmless to people and do not infest homes or stored food. They are beneficial predators that help control garden pests; some species can release defensive odors or secretions if handled.