Scotorythra pachyspila is a moth of the family Geometridae. It was first described by Edward Meyrick in 1899. It is endemic to the Hawaiian islands of Kauai, Oahu, Maui, Lanai and Hawaii
The larvae feed on Metrosideros species.
. Elwood Zimmerman . 1958 . Insects of Hawaii . 7 Macrolepidoptera . University of Hawaii Press, Honolulu. 10125/7336 .