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North American Ecology (US and Canada)Phyciodes mylitta is resident to the western United States, into southern British Columbia, and down to southern Mexico and as separate populations in the southwest and in Wyoming (Scott 1986). Habitats are mountains, agricultural fields and towns. Host plants are herbaceous and include many species but mostly in one family, Compositae (also Mimulus guttatus, from family Scrophulariaceae). Eggs are laid on the host plant in large clusters. Individuals overwinter as half-grown larvae. There are multiple flights each year, with approximate flight times Feb.1-Nov. 30 in the southern part of their range and Apr.1-Sept.30 in the northern part of the range (Scott 1986).