Distribution
It originates in Western Europe, with a distribution which includes Portugal, Spain, France, Ireland, Great Britain, Belgium, the Netherlands, Germany, Denmark, Norway, Sweden, Finland, Estonia, Latvia, Lithuania, Poland, Czech Republic, Slovakia, Russia, Ukraine, Hungary, Greece, Switzerland and Italy. It has been introduced into North America, first recorded in 1940. It is now established in the Maritime Region of Canada and the northeastern United States.References:
Some text fragments are auto parsed from Wikipedia.
