Haematopis is a monotypic moth genus in the family Geometridae erected by Jacob Hübner in 1823.

Its only species, Haematopis grataria, the chickweed geometer, was first described by Johan Christian Fabricius in 1823.

The larvae feed on various low-growing plants, including Stellaria, Polygonum and clover.

Their wings are a pale yellow, and their forewings each have a small red or pink spot in the center.

Both the forewings and the hindwings each have two pink or red bands, which appear to be continuous across both sets of wings when the moth is in its resting position.