Tip of forewing pointed. Underside of hindwing with off-white patch near base of costal margin.
Hibernation is by nearly full-grown caterpillars.
One brood from late May-early August. Northern Alaska and northern Canada east to Labrador, south to northern areas of Michigan, Minnesota, and Wisconsin. Isolated populations in Rocky Mountains to Wyoming and southcentral Colorado. G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery. Maintain integrity of bog habitat.