Catalog of the Diptera types described by Camillo Rondani Author Sforzi, Alessandra 0000-0001-6974-7741 alessandra.sforzi@libero.it Author Sommaggio, Daniele 0000-0001-6974-7741 alessandra.sforzi@libero.it text Zootaxa 2021 2021-06-17 4989 1 1 438 journal article 10.11646/zootaxa.4989.1.1 1175-5326 4980621 89C63841-3CF4-491D-8C73-BEF7DCB18FB5 Syrphus fasciventris Rondani, 1851 ORIGINAL DESCRIPTION: 1851: 360. TYPE LOCALITY: “ regioni equatoriali dell’America, principalmente nelle vicinanze del Rio Napo ” [ Equatorial regions of ( South ) America , mainly in the vicinity of Napo River ] ( Rondani 1851: 357 ) . TYPE MATERIAL: not found in this study. CURRENT STATUS: valid species ( Thompson et al. 1976: 39 ). REMARKS: Rondani (1851: 360) described Syrphus fasciventris from just the female sex, without specifying the exact number of specimens, but giving a single measurement of length, from material collected by Osculati (1850) during his journey through equatorial South America. Osculati (1850: 240) named but did not describe the species. Leonardi et al . (1995: 148) and Mazzotti (2011: 166) reported the Osculati collection in Milan as destroyed. We also did not find any material during this study.