Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Cosmopterix lespedezae is a moth of the Cosmopterigidae family. It is known from the United States (South Carolina, Kentucky, Ohio, Arkansas, Texas and Mississippi).Male, female. Forewing length 4.7 mm. Head: frons shining ochreous-grey with greenish and reddish reflections, vertex and neck tufts shining dark brown with reddish gloss, laterally and medially lined white, collar shining dark brown with reddish gloss; labial palpus first segment very short, white, second segment four-fifths of the length of third, dark brown with white longitudinal lines laterally and ventrally