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 Chrysops impar Rondani, 1875 ORIGINAL DESCRIPTION: 1875c: 460. TYPE LOCALITY: “ Insula Bonae Fortunae ( Borneo ) , Provincia Sarawak [ Bona Fortuna Island , Sarawak Province , Borneo ]” ( Rondani 1875c: 421 ) . TYPE MATERIAL: 1 ♀ , syntype ( MSNG ): Sarawak / Typus / impar Rond. / Chrysops impar , n° 73; 1 ♀ , syntype (head, thorax and abdomen mostly eaten by dermestids) ( MZUF : Box 71): Chrysops impar n. / Sarawak / [no identification number ]; 1 ♀ , syntype (head, thorax and abdomen mostly eaten by dermestids) ( MZUF : Box 71): Chrysops impar n. / Borneo, Sarawak , 1865–66, Coll. Doria / [no identification number ]. CURRENT STATUS: junior synonym of Chrysops dispar (Fabricius, 1798) ( Stone 1975: 45 ) . REMARKS: Rondani (1875c: 460) described Chrysops impar from just the female sex, without specifying the exact number of specimens and not giving a range of lengths, from material collected by G. Doria and O. Beccari. Rondani did not select a holotype in his original description. Guiglia (1957: 194) reported “ ♀ Tipo e due cotipi [Type and two cotypes]” in the MSNG. Raineri & Rey (1996: 55) also considered the MSNG specimens as “Typus ♀ , 2 Cotypi [Type ♀ , 2 Cotypes]”. Guiglia (1957: 194) and Raineri & Rey (1996: 55) did not unambiguously indicate the type, therefore they did not designate a lectotype (I.C.Z.N. 1999: Article 74.5). Guiglia and Raineri & Rey incorrectly reported the two cotypes in the MSNG instead of in the MZUF. The MSNG female and the two MZUF females are all syntypes .