Phyllonorycter incanella is a moth of the family Gracillariidae. It is known from California, Maine and Arizona in the United States. The wingspan is about 9 mm. The larvae feed on Alnus species, including Alnus incana and Alnus rhombifolia. They mine the leaves of their host plant. The mine has the form of a tentiform mine on either side of the leaf References incanella Moths of North America Moths described in 1889