Chrysops alter Rondani, 1875

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

Chrysops alter 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 ♀, lectotype ( MSNG): Sarawak / Typus / alter Rond. / Chrysops alter n° 74.

PARALECTOTYPE NOT EXAMINED: 1 ♀ (eaten by dermestids) ( MSNG): Sarawak / Chrysops alter Rond. vid. Rondani ; 1 ♀ ( MSNG): Sarawak / Chrysops alter Rond. vid. Rondani .

CURRENT STATUS: valid species ( Stone 1975: 44).

REMARKS: Rondani (1875c: 460) described Chrysops alter from just the female sex, without specifying the exact number of specimens, but giving a single measurement of length, from material collected by G. Doria and O. Beccari. Guiglia (1957: 194) reported a “ holotype ” (♀) in the MSNG without knowing of two females in the MSNG, which bring the original type series to three specimens. In his original description Rondani did not explicitly refer to a single specimen therefore Guiglia’s “ holotype ” specimen must be considered as the lectotype (I.C.Z.N. 1999: Article 74.6). Raineri & Rey (1996: 54) also reported a single female in the MSNG. The additional two females in the MSNG not examined by Guiglia are paralectotypes.