Stigmella diffasciae
 Stigmella diffasciae is a moth of the Nepticulidae family. It is found in California.The wingspan is 5.4-5.8 mm. There is probably one generation per year with larvae in March and adults in May.The larvae feed on Ceanothus species. They mine the leaves of their host plant. The mine is long narrow linear and located on the upper surface of the leaf. The tract is contorted turning several times in a small area. The frass is deposited evenly throughout the width of the mine.