Acrocercops panacicorticis is a moth of the Gracillariidae family. It is known from New Zealand. The wingspan is 7–8 mm. The larvae feed on Nothopanax arboreum. They mine the stem of their host plant. The mine is a simple gallery throughout, gradually increasing in width. The general direction is along the young stem in the internodes in its long axis. On reaching a node where the large expanded base of the leaf-stalk closely embraces the greater part of the stem the mine follows the obstruction on a varying distance, eventually turning down into the next internode or retracing its way back in its old internode, turning again in a similar manner on reaching the other extremity. In this way the internodes become more or less occupied by long galleries, while at the nodes the mine may enlarg