Key to species of Adama (Zinjella)

1 Pseudostyles with two large teeth on median margin........................................... A. (Z.) maculithorax

- Pseudostyles without teeth on median margin............................................................... 2

2 Aedeagal shaft with a pair of long falcate apical processes in ventral view........................................ 3

- Aedeagal shaft without apical process in ventral view........................................................ 5

3 Aedeagal shaft distinctly recurved in lateral view............................................................ 4

- Aedeagal shaft nearly straight in lateral view................................................... A. (Z.) zandeana

4 Aedeagus with dorsoatrium produced apically in ventral view.......................................... A. (Z.) dike

- Aedeagus with dorsoatrium not produced apically in ventral view.................................. A. (Z.) usambarae

5 Style with apical process thick and long digitate; connective Y-shaped....................... A. (Z.) serriformis sp. nov.

- Style with apical process claw-like; connective U-shaped.......................................... A. (Z.) strigulata