PLATE 2.39. WORKER NASSANov GLAND

BOTTOM LEFT. Hairy sixth and the partly hairless seventh abdominal tergites. The glandular area behind the ridge is not exposed. This view complements the one in the top left micrograph, showing the entire expanse of this tergite. (x 56)

TOP LEFT. Lateral view of the last (seventh) abdominal tergum (dorsal is left). The smooth hairless area is dernarked by the strong submarginal inner ridge; above that is a margin of elevation on the tergum. At the base of this tergum, between terga. six and seven is the scent gland of Nassanov. (x 65)

BOTTOM RIGHT. Pores in the seventh tergite, from which issues the orientation (aggregation) pheromone produced by the Nassanov gland. (x 1,240)

MIDDLE RIGHT. Higher magnification of the pores in the bottom right micrograph. (x 10,000)

TOP RIGHT. Close-up of the base of the seventh tergum, which is overlapped by the sixth tergite. (x 484)