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North American Ecology (US and Canada)Callophrys dumetorum is resident to a small area of coastal Northern California (Scott 1986). Habitats are coastal dunes and foggy hills from Mendocino to Monterey counties, and several inner coast range sites in oak woodland from Stanislaus to Trinity counties. Host plants are restricted to varieties of the herbaceous species Erigonum latifolium (Polygonaceae) and in San Francisco only Lotus scoparius (Leguminosae). Eggs are laid on the host plant singly. Larvae eat flowers, young fruits, sometimes leaves. Individuals overwinter as pupae. There is one flight each year with the approximate flight time Mar15-June15 along the coast, Mar1-April30 inland. depending on latitude **OR** X in the northern part of the range and X in the southern part of their range (Scott 1986).