Chrysops impar Rondani, 1875

Sforzi, Alessandra & Sommaggio, Daniele, 2021, Catalog of the Diptera types described by Camillo Rondani, Zootaxa 4989 (1), pp. 1-438 : 280

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.