Symmacra is a monotypic moth genus in the family Geometridae described by Warren in 1896. Its only species, Symmacra solidaria, was first described by Achille Guenée in 1858. It is found in Indo-Australian tropics of India, Sri Lanka, Borneo east to Fiji, Samoa and Australia.
Its wingspan is about 2 cm. The adult has dull olive-green wings with faint transverse fasciations. In the hindwing, a discal mark consists or a centrally broken fine white bar.
Four subspecies are recognized: