Key to species of Jethsura

1. Body primarily brownish-red (Fig. 5A, 6A). Female flagellum with yellowish-white banding from flagellomeres 7/8–12/13 (Fig. 5A). Dorsal face of propodeum with carinae distinct (Fig. 5E).................................... J. pyriformis

- Primarily black with at least head and mesosoma black (e.g. Figs 1A, 7A). Female flagellum black and without yellowishwhite banding (e.g. Figs 1A, 7A). Dorsal face of propodeum with carinae obsolete (e.g. Figs 1E, 7E)................... 2

2. Head and mesosoma black with metasoma primarily brownish-red (Figs 7A, 8A). Gastrocoelus and thyridium of T2 subobsolete (Fig. 7F)........................................................................ J. rubricauda sp. nov.

- Head, mesosoma, and metasoma black (e.g. Figs 1A, 9A). Gastrocoelus and thyridium of T2 well-developed (e.g. Figs 1E, 9F)................................................................................................ 3

3. Body elongate and strongly laterally flattened (Figs 9A, 10A). Mandible broad (Fig. 9D)............................ 4

- Body of normal length, not strongly laterally flattened (e.g. Figs 1A, 2A). Mandible moderately wide (Fig. 1D) or slightly narrowed (Fig. 3D)...................................................................................... 5

4. Mesopleuron smooth with a few coarse punctures (Fig. 9B)................................... J. serpentina sp. nov.

- Ventral 0.6 of mesopleuron longitudinally rugulose, dorsal 0.4 smooth and coarsely punctate (Fig. 10B)..................................................................................................... Jethsura species X.

5. Mandible black with dark reddish apex (Figs 1D, 2C). Clypeus and supraclypeal area slightly convex in profile (Fig. 1B). In female, head slightly tapering ventrally (Fig. 1C)............................................. J. euthenia sp. nov.

- Mandible brown to light brown with dark brown apex (Figs 3D, 4C). Clypeus and supraclypeal area nearly flat in profile (Fig. 3B). In female, head nearly quadrate (Fig. 3C)............................................ J. gonawindua sp. nov.