Dark-elytra
Guides
Amphasia interstitialis
Red-headed Ground Beetle
Amphasia interstitialis, commonly known as the red-headed ground beetle, is a small ground beetle native to North America. Adults measure 8.5–10.2 mm and display distinctive coloration with dark elytra contrasting against an orange pronotum and head. The species occupies moist, covered microhabitats within deciduous forests, including leaf litter and spaces beneath stones and logs. It is widespread across the northeastern United States and adjacent Canadian provinces, with populations extending into the central United States.