Erbessa albilinea is a moth of the family Notodontidae. It is found in Costa Rica. The length of the forewings is 18.5–21 mm for males and 21–23 mm for females. The ground colour of the forewings is blackish brown. The veins, especially in the basal half, are slightly lighter. The hindwings have a brilliant, iridescent aquamarine to turquoise blue area, this area becomes darker cobalt blue at its lateral margin. The outer margin of the wing is blackish brown.