Attracted to light at my house surrounded by shrubs, old field habitat and mixed forest, including Red Oak.

Introduced from Europe to Massachusetts in 1897; quickly widened its range throughout New England and eastern Canada but then declined to a remnant population on Cape Cod and coastal islands in Maine (info from BugGuide).

Pohl et als (2018) list it as extinct from Canada since the 1940's.

I have been told that populations in Maine have increased in recent years so this species may be expanding again. Seems to be considered a potential major pest of hardwood forests as well as of human health concerns for those coming in contact with the caterpillar!