PLATE 1.4. QUEEN EYES

TOP LEFT. Trio of queen ocelli, two lateral and one median. Long body hairs drape over these socalled simple eyes. (x 58)

TOP RIGHT. Higher magnification of the median ocellus. A single lens serves as the dioptric apparatus for hundreds of underlying photoreceptor cells. The optics are such that no image is formed at the level of the photoreceptor cells. ( x 600)

BOTTOM RIGHT. Survey micrograph of the queen compound eye showing its hirsute character and the glabrous median ocellus (top of the field). The lateral ocelli are obscured by the angle of view and hairs. (x 50)

BOTTOM LEFT. Interfacetal hairs, which are socketed, relatively large, and long. The depth of the focal plane is evident, as the focus is maintained over the considerable curved expanse of the eye. (x 496)