''Elachista leucofrons'' is a moth of the family Elachistidae. It is found in the United States, where it has been recorded from Maine, Ohio, North Carolina, California, Colorado and New Mexico. The habitat consists of low-lying deciduous forests. The wingspan is 9–10 mm. Adults have been recorded on wing in February, May and August, depending on the location. There is one generation per year. The larvae feed on ''

Elymus canadensis ''Elymus canadensis'', commonly known as Canada wild rye or Canadian wildrye, is a species of Elymus (plant), wild rye native to much of North America. It is most abundant in the central plains and Great Plains. It grows in a number of ecosystems ...

'', ''

Elymus virginicus ''Elymus virginicus'', or Virginia wildrye, is a perennial bunchgrass located in Virginia and the eastern United States. Virginia wild rye is one of the few cool season native grasses found in the east Texas area. It is extremely palatable to liv ...

'' and '' Hystrix'' species (including ''

Hystrix patula ''Elymus hystrix'', known as eastern bottlebrush grass, or bottle-brush-grass, is a bunchgrass in the grass family, Poaceae. It is native to the Eastern United States and Eastern Canada. Description ''Elymus hystrix'' is a herbaceous plant wit ...

''). Mining larvae can be found from late February to mid-April.microleps.org
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References

leucofrons Moths described in 1920 Moths of North America {{Elachista-stub