Ethmia nadia
 Ethmia nadia is a moth in the Ethmiidae family. It is found in California.The length of the forewings is 7.7-9.7 mm. The ground color of the forewings is darkgray but paler distally. There are dark spots adjoining a longitudinal streak. Adults are on wing from March to May (in southern California) and from June to July (in Siskiyou County).The larvae feed on Phacelia ramosissima.