FIGURE 28 in The Weevil Rostrum (Coleoptera: Curculionoidea): Internal Structure And Evolutionary Trends

FIGURE 28. Semithin sections of head of Brachycerus sp. (Curculionidae: Brachycerinae: Brachycerini). A, ventral aspect of head; B, lateral aspect of head; C–E, cross sections proceeding from apex of rostrum toward base; C–D, sections at apex of rostrum through mouthparts; E, diagram of section at base of rostrum, posterior to antennal insertion.