(Dendrorycter marmaroides)
Dendrorycter marmaroides is a moth of the family Gracillariidae. It is known from Hokkaidō island of Japan. The wingspan is 7-8.8 mm. The larvae feed on Alnus hirsuta and Alnus japonica. They mine the stem of their host plant. The mine has the form of a long linear mine, just beneath the surface along the axis of the young stem or branch.