Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Marmara arbutiella is a moth of the Gracillariidae family. It is known from Canada and the United States (Oregon, Washington and California). The larvae feed on Arbutus menziesii, Arbutus unedo and Arctostaphylos species. They mine the leaves of their host plant. The mine has the form of a very long, irregular, winding, serpentine mine just under the upper epidermis of the leaf. There are three behaviorally and morphologically distinct larval forms. There are six to eight sap-feeding and two non-feeding, structurally differentiated instars. The early instars are legless sap feeders. The first of the non-feeding instars never issues from the cuticle of the previous (feeding) instar.