Lecithocera octonias is a moth in the family Lecithoceridae. It was described by Edward Meyrick in 1910. It is found on Borneo.[1]
The wingspan is about 19 mm. The forewings are rather dark fuscous, the anterior three-fourths suffusedly mixed throughout with whitish ochreous. There is a straight narrow dark fuscous fascia at two-fifths, edged posteriorly with light ochreous yellow. An 8-shaped ochreous-yellow discal blotch is found on the end of the cell, filled with dark fuscous and there is a slightly incurved indistinct pale ochreous-yellowish subterminal line, enlarged and distinct on the costa, where it is preceded by a dark fuscous spot. The termen is suffused with dark fuscous. The hindwings are rather dark fuscous.[2]