Mestolobes abnormis is a moth of the family Crambidae described by Arthur Gardiner Butler in 1882. It is endemic to the Hawaiian island of Oahu.
Adults have been taken at the flowers of Metrosideros species.
. Elwood Zimmerman . 1958 . Insects of Hawaii . 8 Lepidoptera: Pyraloidea . University of Hawaii Press. 10125/7337 .