Type material of thick-headed flies (Diptera, Conopidae) in the collection of the Museum für Naturkunde Berlin (ZMHB) is documented. The entire collection holds primary type material (i.e. holotypes, lectotypes, syntypes) of 73 species. Five Conops species with previously unknown subgenus belong to the subgenus Asiconops: C. frontosus Kröber, 1916; C. indicus Kröber, 1916; C. maculiventris Kröber, 1916; C. nigrofasciatus Kröber, 1916; and C. punctifrons Kröber 1916. Two new synonyms are introduced: Conops vaginalis Rondani, 1865 syn. nov. of Conops truncatus Loew, 1847 and Siniconops fuscatus Qiao & Chao, 1998 syn. nov. of Physocephala sepulchralis Brunetti, 1912.