''Eupithecia halosydne'' is a

moth Moths are a paraphyletic group of insects that includes all members of the order Lepidoptera that are not butterflies, with moths making up the vast majority of the order. There are thought to be approximately 160,000 species of moth, many of w ...

in the family Geometridae. It is found on the Juan Fernandez Islands in

Chile Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the east a ...

., 1987, The ''Eupithecia'' (Lepidoptera, Geometridae) of Chile. ''Bulletin of the American Museum of Natural History'' 186 (3): 269-363. The length of the forewings is about 8–9 mm for females. The forewings are pale ochraceous brown. The hindwings are slightly paler than forewings. Adults have been recorded on wing in March.

References

Moths described in 1922 halosydne Moths of South America Endemic fauna of Chile {{Eupithecia-stub