The Rondani collection of Cecidomyiidae in Florence, Italy, is cataloged to account for existing specimens of Rondani species. Areport is made on the status and identity of each of Rondani's 16 species of Cecidomyiidae. Types of 12 species are represented by specimens in good to poor condition; those of the remaining four species cannot be found. Alectotypeis designated for Brachincura fuscogrisca and illustrations are given of its male genitalia and part of its antenna. Recommendations are made for future fixation of lectotypes or neotypes of some of Rondani's species
