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 Merodon italicus Rondani, 1845 ORIGINAL DESCRIPTION: 1845f: 257 (key), 259 (description). TYPE LOCALITY: “ in Italia [ Italy ]” ( Fabricius 1794: 283 ) [ type locality for Merodon natans ( Fabricius, 1794 ) ]. TYPE MATERIAL: see Remarks. CURRENT STATUS: junior synonym of Merodon natans Fabricius, 1794 ( Peck 1988: 172 ) ; valid species ( Vujić et al . 2011: 83 ); unnecessary substitute name for Merodon natans Fabricius, 1794 and junior synonym of Merodon natans Fabricius, 1794 (this work). REMARKS: Rondani (1845f: 257) considered the females of Merodon natans ( Fabricius, 1794 ) and the males of Merodon melancholicus ( Fabricius, 1794 ) as belonging to the same species but, instead of applying the Principle of Priority, incorrectly proposed the substitute name Merodon italicus (1845f: 257) . He later ( Rondani 1857: 62 ) reaffirmed his proposing to combine Merodon melancholicus and Merodon natans . Merodon italicus was considered as a synonym of Merodon melancholicus by Schiner (1860: 347 , 1864: 108 ) and Bezzi & Stein (1907: 119) and as a synonym of Merodon natans by Kertész (1910: 277) , Sack (1931: 322) and Peck (1988: 172) . Vujić et al . (2011: 83) incorrectly considered Merodon italicus as a valid species and senior synonym of Merodon longicornis Sack, 1913 . The type material for Merodon italicus will be the same as for the name it was proposed to replace, i. e., Merodon natans . The type material of this latter species is preserved in the ZMUC ( Michelsen 2017: 17 ). Hurkmans (1993: 191) incorrectly designated one of the three females in the MZUF as lectotype .