Wingspan c. 12mm.
Recorded mostly from the London area, there are a few odd records from elsewhere in southern England and Wales, but it is relatively uncommon.
The adult moths can occur anytime between March and August, and may have two generations. They do resemble other Nemapogon species, such as N. cloacella, but generally have narrower wings and a whiter head than that species.
The larvae feed on bracket fungus or dead wood, and possibly on dried grain or stored produce.