Assertion: gypsy moth | /r/Causes | ecological and economic damage
Facets:
value: in canada
type: LOCATION
value: in the eastern united states
type: LOCATION
Source sentences:
text: The gypsy moth (Portheria dispar ), a native of Europe and parts of Asia, has been causing both ecological and economic damage in the eastern United States and Canada since its introduction in New England in the 1860s.