59. a) Middle basitarsus with ventral surface strongly protuberant and polished; middle tibia without an apical spur (Figure 81a) ..... 60

b) Middle basitarsus with ventral surface unmodified, not enlarged ventrally and uniformly covered with a brush of bristles; middle tibia with an apical spur (Figure 81b) ..... 62
Figure 81a
Figure 81b

Figure 81a: Middle basitarsus strongly protruberant, middle tibia without apical spur
Click to Enlarge →           a

Figure 81b: Middle basitarsus not enlarged ventrally, middle tibia with apical spur
Click to Enlarge →           b