The Pine White is only very distantly related to our other Whites; its roots lie in both the Old and New World Tropics, and it is apparently descended from mistletoe-feeding ancestors. Perhaps it "got onto" pines by way of the pine mistletoes, genus Arceuthobium? At any rate, it occurs in pine forests from the upper foothills to the subalpine and on both slopes of the Sierra, and in the Coast Range north of the Bay. Adults "lek" (a type of mate-locating behavior) by spiraling around the upper parts of pine trees.