Sterrhinae is a large subfamily of geometer moths (family Geometridae) with some 2,800 described species. This subfamily was described by Edward Meyrick in 1892. Sterrhinae is in fact a junior synonym of Idaeidae (Butler, 1881). Seeing this name is hardly used in literature and Sterrhinae is widely used, this name is preferred. The tribe Lythriini with the genus Lythria (Hübner, 1823) and the species Lythria cruentaria (Hufnagel, 1767) was transferred from Larentiinae in 2008.