Elachista amamii is a moth of the family Elachistidae. It is found in the Ryukyu Islands of JapanJapanese Moths and in Taiwan.TaiBNET - Catalogue of Life of Taiwan
The length of the forewings is 2.4–3 mm for males and 2.5–3 mm for females.
The larvae feed on Thuerea involuta, Digitaria timorensis and Digitaria adscendens. They mine the leaves of their host plant., 2005: A revision of the Elachista praelineata group (Lepidoptera: Elachistidae) in Japan, with comments on morphology of the pupa in Elachista. Tijdschrift voor Entomologie 148: 1-19. Full article: .
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