Cliff-habitat
Guides
Ellipsoptera puritana
Puritan tiger beetle
Ellipsoptera puritana, the Puritan tiger beetle, is a federally threatened species endemic to a highly restricted range in the northeastern United States. Adults are medium-sized, fast-running predators with distinctive cream-white marginal markings on their elytra. The species occupies a narrow ecological niche: sandy beaches and riverbanks backed by eroding cliffs or bluffs, where larvae burrow into exposed sediment faces. Its two-year life cycle involves larval development in burrows followed by brief adult emergence in mid-summer. Habitat loss from shoreline development, dam construction, and bank stabilization has severely reduced populations, prompting intensive conservation efforts including captive rearing programs.