PLATE 3.26. DRONE MIDDLE LEG

TOP. Photomontage of the left middle (mesothoracic) leg. The coxa is obscured but, proximally to distally, the trochanter, femur tibia (with spine or wax spur pointed downward), basitarsus and three additional tarsomeres, and the pretarsus with claws are visible. ( x 31)

BOTTOM RIGHT . tibia-basitarsus Joint. This is a monocondylic (single point) articulation. The relatively large size and stoutness of the tibial spine are evident. ( x 93)

BOTTOM LEFT. Tibia-basitarsus Joint. This view and magnification make apparent the differences in the cuticular surfaces between the scalelike tibial base, the pebble-grained tibial spine, and the smooth head of the basitarsus. The two forms of setae (branched and simple trichoid) on the tibia are visible at this articulation, as well as the scales on the mtersegmental membrane at this Joint. ( x 355)