PLATE 1.9. QUEEN PROBOSCIS, LATERAL VIEW

BOTTOM LEFT. Sharply bent glossa (tongue). Over half the length of the glossa, the principal feature of this micrograph, is covered by the embracing proximal segments of the labial palps. The labial palps terminate in a pair of budlike appendages that appear to be sensory in nature. The most extended appendage is the glossa. (x 65)

BOTTOM RIGHT. Close-up of the terminus of the labial palp. Each "bud" has two segments and bears short cuticular spines and pegs, which may be sensors for taste and touch. (x 180)

TOP LEFT. Proximal portion of the glossa and labial palps. The mandibles with their naked tips incompletely cover the glossa and the hairy labrum abuts and somewhat overhangs the paraglossae. (x 65)

TOP RIGHT. Base of the mandible (bottom) where it articulates with (hinges on) the gena (top). An array of tiny cuticular denticles is visible on the intersegmental "membrane" (x 169)