Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Arborvitae Leafminer, Thuja Mining Moth or American Thuja Shoot Moth (Argyresthia thuiella) is a moth of the Yponomeutidae family. It is found in southeastern Canada and the northeastern United States to North Carolina, west to Missouri, north to Manitoba. There is also an isolated population in British Columbia. The species is also present in Europe, where it has been introduced on three occasions: to the Netherlands in 1971, Germany in 1975 and Austria in 1976.