Acrocercops panacifinens is a moth of the Gracillariidae family. It is known from New Zealand. The wingspan is about 10 mm for females and 8 mm for males. The larvae feed on Nothopanax arboreum. They mine the leaves of their host plant. The mine is a simple gallery, white in colour, on the upper surface of the leaf. It increases in width very gradually. The larva on hatching burrows immediately into the leaf, and heads in a more or less of a straight line till the margin or midrib of the leaf is encountered, after which this obstacle is closely followed. Its course invariably takes it close around the greater portion or entire margin of the leaf, closely following the digitations and any incursions made by other insects, and also along one or both of the sides of the midrib, this forming a