It looked like a soft carpet sample.
This moth was a new one to me. Thank goodness for the Internet and Wikipedia
I get to learn something new every day!
Eacles imperialis is one of a few saturniid species in a regional decline throughout the northeastern US, with some New England states lacking records for many decades. A colony on Martha’s Vineyard, Massachusetts has been the subject of scientific and local political activity, especially concerning preservation of sensitive frost-bottom oak/pine habitat. Reasons for decline are unclear, as are the true northern limits of the nominate’s range, due to possible confusion with subspecies E. i. pini in existing records. E. imperialis is certainly a common species of middle-atlantic states, Appalachia, the Ohio Valley, and Deep South regions, and is associated with forest, rural and suburban habitat. It is possible that to the north, E. imperialis requires specific habitat and that the increasing fragmentation of niches such as coastal or montane pine barrens is a factor.