The morphology of the tribe Macrolycini of net-winged beetles (Lycidae) is studied. The subtribe Dilophotina Kleine, nom. rev. is revalidated from synonymy with Macrolycini. A new genus Calcaeron gen. n. and five new species: Mesolycus hubeicus, M. nanensis, M. murzini, Calcaeron sundaicus and C. baluensis are described. Mesolycus Gorham nom. rev. is revalidated from synonymy with Dilophotes, while Flabellodilophotes Pic, 1912 and Biphilodes Kazantsev, 2000 are synonymized with Mesolycus. Dilophotes moxiensis Bic is found to be synonymous to Mesolycus ilyai (Kazantsev). M. mediozonatus (Nakane), stat. n. is raised to species level. The following taxa are transferred to Mesolycus: Dilophotes pygmaeus Waterhouse, D. shelfordi Bourgeois, D. discoidalis Pic, D. ater Pic, D. tricostatus Kleine, D. ilyai Kazantsev, D. qinlinganus Kazantsev, D. tibetanus Kazantsev, D. berezowskii Kazantsev, D. sausai Bic, D. laosensis Bic, D. bolavensis Bic, D. jendeki Bic, D. holzschuhi Bic, D. bhutanensis Bic and Flabellodilophotes obscurus Pic. The phylogeny of Macrolycini is discussed and a key to the genera of the tribe is provided.