Key to world species of Axea

1 Hind wing with submarginal vein complete, tubular (Asian species) ......................................................................... 2

- Hind wing with submarginal vein absent all but basally (Africa, Yemen) .................................................................. 4

2 Metascutellum not projecting, smooth and shining (Fig. 73); mesosoma anterior to propodeum orange, metasoma nearly black, concolorous with head (Figs. 71, 72) ...................................................... A. kilen Valerio & Yoder, n.sp.

- Metascutellum projecting, sculptured (Figs. 19, 20); mesosoma and metasoma concolorous, yellow to orange yellow with head black ........................................................................................................................................................... 3

3 Metascutellum bilobed (Fig. 20) (India) ..................................................................... A. yama Valerio & Yoder, n.sp.

- Metascutellum bluntly pointed medially (Fig. 19) (Southeast Asia).............................................. A. atriceps (Kieffer)

4 Head and mesosoma orange, metasoma black (Figs. 77, 78) (Madagascar) ............... A. mena Valerio & Yoder, n.sp.

- Color pattern not as above (Figs. 47, 53, 59) .............................................................................................................. 5

5 Head and mesosoma black, metasoma medially yellow with lateral areas black for metasomal terga 2–5, T1 mainly black with a reduced yellow area posteromedially (Figs. 119, 120); legs including coxae yellow (Madagascar; male unknown) ................................................................................................................ A. zanahary Valerio & Yoder, n.sp.

- Color pattern not as described above........................................................................................................................... 6

6 Lateral ocellus separated from eye margin (Fig. 58; known only from male) ............ A. eshu Valerio & Yoder, n.sp.

- Lateral ocellus contiguous with eye margin ............................................................................................................... 7