14. Simultaneously: propleuron bare AND tergite 2 dorsally hollowed to the posterior edge. Tergites 3 and 4 with discal bristles .......... Estheria
- Propleuron hairy (as in fig. 90); when rarely bare or almost bare, then tergite 2 is hollowed at most to the middle. Tergites 3 and 4 without discal bristles (at most with a few stronger hairs in the upright hairs on the posterior edge of males) .......... 15

15. Parafrontalia with dense hairs. Fore tarsus as long as head height or shorter. Tergite 2 always hollowed to the posterior edge. Hind tibia ad in males (and often also in females) with a regular bristle comb (fig. 160) .......... Billaea
- Parafrontalia bare or (rarely) with up to 20 small hairs on each side. Fore tarsus longer than the height of the head. Tergite 2 often not quite hollowed to the posterior edge. Hind tibia ad in males and females with rather uneven bristlets (fig. 164) .......... Dinera