Phryganodes tagiadalis is a species of moth in the family Crambidae.

It is found in Papua New Guinea, where it has been recorded from the D'Entrecasteaux Islands (Fergusson Island).

[1] Phryganodes tagiadalis is a mostly black-brown moth with a slight purplish gloss.

However, some parts are not black-brown, but rather white.

These are the legs, belly (called a ventral), frons (part of the forehead), underside of hind wing, and genital tufts on the males.