Lecithocera leucomastis is a moth in the family Lecithoceridae. It was described by Alexey Diakonoff in 1968. It is found on Luzon in the Philippines.[1]
The wingspan is about 15.5 mm. The forewings are rather dark purple fuscous with a distinct gloss. The base of the wing is slightly darker. The hindwings are glossy pale bronze fuscous.[2]