Key to males of the Neotropical species of the genus Brunettia
1. Eyes separated by 1 facet diameter; Sc sclerotized ...................................................... 2
Eye contiguous; Sc unsclerotized.................................................................................. 3
2. Wing with acute tip; parameres with truncate apex and apical evagination; distiphallus triangular and thick; aedeagal apodeme wider than gonocoxite .......... B. acutala Quate
Wing with rounded apex; parameres triangular, apex sharp, distiphallus digitiform, narrow; aedeagal apodeme narrow ............................................. B. dominicana Wagner
3. Line of bristles of Sc with hooklike curved apices; base of R1 sinuous; R1 continuous without break ................................................................................... B. insularis Wagner
Line of bristles of Sc with straight apices; base of R1 straight .................................... 4
4. Filaments of distiphallus covered by posthypandrial plate ........................................... ............................................................................................ B. caipira Bravo & Amorim
Filaments of distiphallus passing posterior margin of posthypandrial plate ............... 5
5. Base of R4 broken, separated from Rs; CuA sclerotized .................. B. apiculata Quate
Base of R4 articulated to Rs; CuA unsclerotized ........................... B. itabunensis Bravo