North American Ecology (US and Canada)

Boloria chariclea is a year-round resident across Canada, south into the most northern United States and down through the Rocky Mountains to Utah, with a separate population as far south as Arizona (Scott 1986). Habitats are arctic/alpine tundra and Canadian zone moist valley bottoms. Host plants are usually herbaceous or shrubs that include species from many families, including Salicaceae, Violaceae, Rosaceae. and Polygonaceae. Eggs are laid on the host plant singly. Individuals overwinter as larvae. There is one flight each year with the approximate flight time late June-early Aug in the northern part of the range and July1-Aug30 in the southern part of their range (Scott 1986). Some northern subspecies are biennial.