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North American Ecology (US and Canada)Limenitis arthemis arthemis is the northern sub-species of this species and is distributed throughout Canada into the northern US (Scott 1986). This sub-species has a different color morph from its sister sub-species, L. a. astyanax, which mimics the pipevine swallowtail, with which it co-occurs. Habitats are deciduous woodland and suburbs from the subtropics to the edge of the arctic tundra. Host plants are mostly trees and include species from many families, including Salicaceae, Betulaceae, Rosaceae. Eggs are laid singly on the host plant. Individuals overwinter as larvae. There are variable number of flights each year depending on latitude with one in the northern parts of the range and in high mountains, occurring in July and August, up to two flights further south, occurring late June to Aug. (Scott 1986).