Coleophora laricella was known to be a deforester of which species of tree found in the western United States?
Coleophora laricella:  However, it was introduced to North America in the mid-19th century where it has gained a wide range and become an invasive defoliater of several species of the genus "Larix", particularly the western larch "Larix occidentalis" and the tamarack larch "Larix laricina". Larix occidentalis: Western larch (Larix occidentalis) is a species of larch native to the mountains of western North America, in Canada in southeastern British Columbia and southwestern Alberta, and in the United States in eastern Washington, eastern Oregon, northern Idaho, and western Montana.
Larix occidentalis