Question: Where did the hemlock wooly adelgid come from?

context: The hemlock woolly adelgid (; "Adelges tsugae"), or HWA, is an insect of the order Hemiptera (true bugs) native to East Asia. It feeds by sucking sap from hemlock and spruce trees ("Tsuga" spp.; "Picea" spp.). In its native range, HWA is not a serious pest because populations are managed by natural predators and parasitoids and by host resistance. In eastern North America it is a destructive pest that threatens the eastern hemlock ("Tsuga canadensis") and the Carolina hemlock ("Tsuga caroliniana"). HWA is also found in western North America, where it has likely been present for thousands of years. In western North America, it primarily attacks western hemlock "Tsuga heterophylla" and has only caused minor damage due to natural predators and host resistance. Accidentally introduced to North America from Japan, HWA was first found in the eastern United States near Richmond, Virginia, in 1951. The pest is now found from northern Georgia to coastal Maine and southwestern Nova Scotia. As of 2015, 90% of the geographic range of eastern hemlock in North America has been affected by HWA.
question: Where is the hemlock wooly adelgid native to?
short_answers: East Asia
context: The hemlock woolly adelgid (; "Adelges tsugae"), or HWA, is an insect of the order Hemiptera (true bugs) native to East Asia. It feeds by sucking sap from hemlock and spruce trees ("Tsuga" spp.; "Picea" spp.). In its native range, HWA is not a serious pest because populations are managed by natural predators and parasitoids and by host resistance. In eastern North America it is a destructive pest that threatens the eastern hemlock ("Tsuga canadensis") and the Carolina hemlock ("Tsuga caroliniana"). HWA is also found in western North America, where it has likely been present for thousands of years. In western North America, it primarily attacks western hemlock "Tsuga heterophylla" and has only caused minor damage due to natural predators and host resistance. Accidentally introduced to North America from Japan, HWA was first found in the eastern United States near Richmond, Virginia, in 1951. The pest is now found from northern Georgia to coastal Maine and southwestern Nova Scotia. As of 2015, 90% of the geographic range of eastern hemlock in North America has been affected by HWA.
question: Where did the hemlock wooly adelgid come to North America from?
short_answers: Japan

Answer: The hemlock woolly adelgid, or HWA, is an insect of the order Hemiptera native to East Asia. It feeds by sucking sap from hemlock and spruce trees. Accidentally introduced to North America from Japan, HWA was first found in the eastern United States near Richmond, Virginia, in 1951.