Hemithea is a genus of moths in the family Geometridae erected by Philogène Auguste Joseph Duponchel in 1829.

[1] Palpi reaching just beyond the frons in male, long in female.

Hind tibia of male dilated with a fold containing a tuft of long hair.

Abdomen with dorsal tufts on three segments.

Hindwings with angled outer margin at vein 4.