
Community identification
Black Ground Beetle (Harpaline Ground Beetle)
Harpalus pensylvanicus
- Order & Family
- Coleoptera: Carabidae
- Size
- 13 to 16 mm (approximately 0.5 to 0.6 inches)
Natural Habitat
Found in gardens, meadows, open fields, and under debris or stones in urban and rural areas.
Diet & Feeding
Omnivorous; feeds on various seeds (like ragweed) and small invertebrates including caterpillars, slugs, and aphids.
Behavior Patterns
Primarily nocturnal and spends the day hiding in dark, moist places. They are fast runners and are often attracted to porch lights at night.
Risks & Benefits
Generally beneficial to the ecosystem as they control pest populations and consume weed seeds. They are harmless to humans, though they may produce a foul odor if handled.