As a result of the insect surveys in the northern part of Vietnam, the genera Homaloxestis Meyrick and Synersaga $Gozmacute{a}ny$ of the subfamily Lecithocerinae belonging to Lecithoceridae are reviewed in this paper, and illustrations of these moths and their genitalia are provided. Three of the nine species identified are described as new species: Homaloxestis. vinhphuensis sp. nov., Synersaga kuni sp. nov., and S. nigriptera sp. novo Keys to the species of both genera are provided. Frisilia striapunctata Wu is transferred to the genus Homaloxestis Meyrick.