Tsagonus silvestrii (Demange & Silva, 1976) (See Introduction)

Semnosoma concolor Silvestri 1905a: 728 (first description, in Latin, of what Silvestri believed to be Strongylosoma concolor Gervais, 1847); plate 34, Figs 4–6

Semnosoma concolor Demange & Silva 1976a: 22 (discussion of identity of species); Figs 10, 11 (p. 22), 18, 19 (p. 23)

Semnosoma silvestrii Demange & Silva 1976a: 20 (replacement name, type of Silvestri's " Strongylosoma concolor "; discussion of identity of species), 30 (in key to Semnosoma species)

( Tsagonus + silvestrii) Hoffman 1980: 150 ("Silvestri misidentified concolor and the species he considered to be concolor is actually referable to Tsagonus Chamberlin "; new combination)

Tsagonus silvestrii Golovatch 2014: 265 (briefly noted)