Chorisops tibialis ( Meigen, 1820 )

Mason, Franco, Rozkošný, Rudolf & Hauser, Martin, 2009, A review of the soldier flies (Diptera: Stratiomyidae) of Sardinia *, Zootaxa 2318, pp. 507-530 : 509

[ Chorisops tibialis ( Meigen, 1820) ]

Published records. Ogliastra prov.: [in the mountain forest near] Gennargentu ( Costa 1882, as Beris hyaliniventris Costa, 1857 ). Sassari prov.: Ploaghe ( Costa 1884, as B. hyaliniventris ).

Remarks. Beris hyaliniventris Costa, 1857 , which was described from Naples (Campania region, southern Italy) and was later recorded also from the above-quoted Sardinian localities, was treated by Woodley (2001), following Rozkošný (1982), as a synonym of Chorisops tibialis . However, three other species of Chorisops Rondani, 1856 – C. caroli , C. masoni and C. tunisiae (Becker, 1915) – were recently recorded from Sardinia and the Costa types could not be found (Mason, unpublished data). Because the reliable distinguishing characters of these species are represented mainly by structures of the male terminalia, the correct synonymy of Beris hyaliniventris remains doubtful, and it is here considered as a species incertae sedis of Chorisops .