Key to the Species of Jamaha Gnezdilov & O’Brien, 2008

1. Male pygofer in lateral view bearing a large spatulate process dorsad of the elongate process on the lateral margin of the pygofer opening (Fig. 5); anal tube greatly expanded at apex.......................................................... 2

–. Male pygofer in lateral view bearing only an elongate process on the lateral margin of the pygofer opening; anal tube in lateral view bearing a large ventral tooth, but not particularly expanded apically................................. J. chrysops

2. Large dorsal spatulate process of the lateral margin of the pale pygofer constricted near the base (Fig. 5); anal tube apically truncate; dorsolateral phallobase lobes 4-branched on the left side, 3 branched on the right (Fig. 6)......... J. playa sp. nov.

–. Large dorsal spatulate process of the lateral margin of the pale pygofer not constricted near the base.................... 3

3. Aedeagus with apical processes angled dorsad (Fig. 10A).............................................. J. elevans

–. Aedeagus lacking apical processes (Fig. 10B)............................................... J. rugosa comb. nov.