Key to the species of Curtara (Labata)

1. Dorsoapical spine more than 0.5 x the length of pygofer; basal aedeagal processes apically branched ........................ ...................................................................................................................... C. ushima sp.nov. (Mato Grosso, Brazil)

1’. Dorsoapical spine less than 0.5 x the length of pygofer; basal aedeagal processes apically unbranched .................... 2

2. Style with a short pointed enlargement on ventral margin ................. C. xingua DeLong, 1980 (Mato Grosso, Brazil)

2’. Style without pointed enlargement on ventral margin ........ C. basala DeLong & Triplehorn, 1978 (Chaco, Paraguay)