PLATE 1.23. QUEEN W1NG HOOKS

TOP. Hooks on the hind wing close to the thickened base of the articulating forewing. Particularly apparent are the hind-wing hairs on the leading edge of the hind wing (compare with peg organs of the worker, Plate 2.23). These hairs project forward and are found on either side of the 15 hooks. (x 170)

MIDDLE LEFT. Higher magnification of the trailing edge of the forewing clasped by the wing hooks in flight. The hairs adjacent to the trailing vein of the forewing are socketed and may be mechanoreceptors capable of sensing the attack angle of the wings. The bent tips of a few hairs may have been caused by electron beam damage. ( x 480)

BOTTOM LEFT. Hooks on the leading edge of the hind wing, each with a slightly forked terminus. The bent and twisted nature of the hook is apparent from this angle; in three dimensions the hook extends in two directions. (x 605)

BOTTOM RIGHT. Enlargement of the middle hook in the bottom left micrograph. The socket for the hook is less pronounced than that of the worker and no peg organs are present, only socketed microtrichia that may be capable of monitoring the proximity of the wings. (x 1,210)