Key to species of Boethella

1. Malar space 0.5× basal width of mandible (Fig. 9)................................................... B. darlingi

- Malar space obliterated, mandible margin contiguous with ventral edge of eye (Figs 4, 12, 15)........................ 2

2. Auxiliary carina of mesopleuron extending from anterior edge and joining epicnemial carina (Fig. 7)................... 3

- Auxiliary carina of mesopleuron not extending to epicnemial carina (Figs 1, 4, 18)................................. 4

3. Epicnemial carina extending dorsal to point of union of auxiliary carina by at least the length of auxiliary carina (Fig. 7); T4 predominantly brown, yellow laterally and sometimes with a yellow median longitudinal stripe or spot (Fig. 6).... B. curriei

- Epicnemial carina extending dorsal to point of union of auxiliary carina by much less than the length of auxiliary carina (Fig. 12), or not extending at all; T4 entirely yellow or yellow with a trace of brown in apical 0.2 and with a longitudinal brown or brown and white region in median apical 0.3 (Fig. 10)............................................... B. guidottiae

4. Auxiliary carina of mesopleuron curving sharply at midpoint so it runs parallel to anterior edge of mesopleuron (Fig. 18); hind femur black (Fig. 16)...................................................................... B. jatai sp. nov.

- Auxiliary carina of mesopleuron not curving sharply at midpoint; hind femur yellow or orange........................ 5

5. Hind tibia dark brown, except light brown at base (Fig. 2).............................................. B. canilae

- Hind tibia basal 0.7 yellow, apical 0.3 brown (Fig. 14)................................................. B. hubleyi