Rhimphalea anoxantha is a moth in the family Crambidae.

The forewings are black-brown with a cupreous gloss and with two slight yellowish-white streaks below the base of the costa, as well as an oblique yellowish-white antemedial band from the cell to the inner margin.

There are yellowish-white streaks beyond the upper angle of the cell above and below vein 7.

The postmedial line is yellowish white.

There is a slight postmedial line excurved between veins 5 and 2.