Eriocraniella xanthocara is a moth of the Eriocraniidae family. It was described by Davis in 1978. It is found in California. The wingspan is 7–8 mm for males and 7.5-8.5 mm for females. The forewings are immaculate, dark fuscous with a prominent greenish blue iridescence. The hindwings are similar to the forewings in color though less lustrous and with more purplish iridescence. They are uniformly covered with relatively broad scales. Adults are on wing from early March to late April in one generation per year.