PLATE 1.27. QUEEN FORELEG

BOTTOM. Photomontage of the prothoracic leg (foreleg). The three main segments of the leg (distal to proximal) are the tarsus, tibia, and the femur (the largest of the three). At the proximal end of the tarsus (basitarsus) is the sharply notched "antenna cleaner." A closing lobe (fibula) or spur extends to partly cover the notch. In grooming, the antenna is passed repeatedly through this notch to clean the sensory hairs and plates of the antenna. (x34)

TOP LEFT Prothoracic leg bases (legs removed; head is to the top). The two empty coxal cavi ties are side by side. The tips of the maxillae (top) are situated between the coxal cavities. (x 60)

TOP RIGHT Higher magnification of the intersegmental membrane between the trochanter and femur. The irregularly furrowed character of this surface is interesting, as are the unsocketed, tiny teatlike cuticular spurs. ( x 2,400)