Geometrinae is the nominate subfamily of the geometer moth family (Geometridae). It is strongly split, containing a considerable number of tribes of which most are presently very small or monotypic. These small moths are often a light bluish green, leading to the common name of emerald moths, though a few species called thus are also found in the tribe Campaeini of the Ennominae. In 2018, a phylogeny and classification based on a molecular phylogenetic analysis was published in the Zoological Journal of the Linnean Society in which 13 tribes were accepted.[1]
There are about 2,300 described species, mostly from the tropics.
Some geometrine genera have not been definitely assigned to a tribe.[2] These include: