The larvae feed on Carya illinoinensis (pecan). They mine the leaves of their host plant. The mine consists of linear (serpentine) mines, just beneath the upper surface of the leaf. If the egg is laid near the center of the leaflet, the early bends of the resulting mine may lie around each other in a spiral because the larvae are unable to cross leaflet veins. If the egg is laid near the margin of the leaf, the mines will often follow leaflet margins.
