Eudonia microdontalis is a moth in the family Crambidae. It was described by George Hampson in 1907. It is found in Japan, China (Gansu, Hubei, Hunan, Zhejiang) and Russia., 2012: One new species of the genus Eudonia Billberg (Lepidoptera: Crambidae: Scopariinae) from China. Entomotaxonomia 34 (2): 267-269.
The wingspan is 16–22 mm. The forewings are white tinged with brown and irrorated with black. The antemedial line is double and filled with white. The hindwings are white, tinged with brown.The Annals and Magazine of Natural History: Including Zoology, Botany, and Geology
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