Key to Australasian species of Keilbachia

1. First palpomere of maxillary palpus with sensilla in sensory pit.................................. K. indigena Mohrig

- First palpomere of maxillary palpus without sensory pit, sensilla in group on dorsal surface of palpomere................ 2

2. Apex of gonostylus with at least one slender, truncate seta..................................................... 3

- Apex of gonostylus with only sharp setae................................................................... 5

3. Gonostylus distinctly narrowed subapically, its subapical width less than half of its medial width....... K. constricta sp. n.

- Gonostylus only slightly narrowed subapically, its subapical width no less than ¼ of its medial width................... 4

4. Antennal flagellomere 4 long, 2.25–2.95x as long as wide, tegmen apically elongate subtriangular, about 1.3x as wide as long...................................................................................... K. fratercula sp. n.

- Antennal flagellomere 4 short, 1.75–2.1x as long as wide, tegmen apically short and truncate, about 1.8x as wide as long........................................................................................... K. truncata sp. n.

5. Apex of gonostylus with numerous slightly thickened setae, vestiture of antennal flagellomeres dense..... K. adstricta sp. n.

- Apex of gonostylus with a few slender setae, vestiture of antennal flagellomeres sparse................. K. cracens sp. n.