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Photo of faded Grass Emerald by Graeme Davis
As with many green moths Grass Emerald may fade. From a blue-
Geometrinae & Ennominae
Quite a number of Geometer moths are called Emeralds. They are generally emerald
green in colour. For fresh specimens the species are distinctive colours although
it is unwise to use this to distinguish them, as with green moths generally, the
colour does fade.
The relatively common species belong to 2 different sub-
1. Geometrinae : Grass Emerald, Large Emerald, Blotched Emerald, Common Emerald, Small Emerald
2. Ennominae : Light Emerald
Small moths -
Medium Size -
Large Moths -
The hindwings are strongly pointed in the centre of the outer edge.
The fringe on the outer edge of the wings is white with black stripes.
Forewing has a broad slightly darker central cross-
In fresh specimens the colour is a more vivid emerald green than the other Emeralds.
The forewing and hindwing have large white blotches marked with brown or orange on the trailing edge.
An irregular white cross-
A wide cross-
The fringe on the outer edge of the wings is plain green or white.
Hind wings less strongly pointed than in Common Emerald.
Light Emerald is far paler green than fresh specimens of the other Emeralds.
Markings are similar to those of Small Emerald but Light Emerald is far larger.
Two white cross-
The inner one is spiky;
the outer one is dotted.
Outer edge of the wings is scalloped.