Phrygionis argentata is a species of moth in the family Geometridae.

Wings pale yellowish grey.

A narrow yellow bar rises near the middle of the anterior wings, which, crossing them and the posterior, ends a little below the body on the abdominal edges; another small bar crosses the anterior wings near the shoulders, both of them being verged with silver.

A small dark spot, surrounded with silver, is also placed close to the external edges of the posterior wings; and above it is a yellowish patch reaching to the upper corners.

Wings pale light-coloured, almost white, immaculate.