Boreofairchildia nearctica (synonym Nemopalpus nearcticus, with the genus sometimes spelled Nemapalpus), the sugarfoot moth-fly, is a species of nematoceran flies in the family Psychodidae. It is endemic to the United States.
The IUCN conservation status of Nemopalpus nearcticus is "EN", endangered. The species faces a high risk of extinction in the near future.