Elachista caliginosa
Elachista caliginosa is a moth in the family Elachistidae. It was described by Parenti in 1983. It is found in Japan and the Russian Far East.
The length of the forewings is 2.5–3 mm for males and 2.7-3.2 mm for females
The larvae feed on Eccoilopus cotulifer and possibly Spodiopogon sibiricus. They mine the leaves of their host plant.