Philenora aroa

Philenora aroa is a moth in the subfamily Arctiinae. It was described by George Thomas Bethune-Baker in 1904. It is found in New Guinea.

The wingspan is 22–24 mm. Its forewings are greyish white, with a dark grey antemedial line and a small dark spot at the end of the cell.

That is followed by an irregular dark postmedial line, with a dark grey suffusion in front of the apex.

The hindwings are uniform greyish white, with a dark termen.