Scanning electron microscopy (SEM) of the head of Dasmeusa pauperata (Fabricius, 1803). A Compound eye: ommatidia; B interommatidial sensillum trichodeum; C brochosomes on ommatidium; D antenna: scape, pedicel, and base of flagellum; E microtrichia sculpturing on antennal pedicel; F scale-like sculpturing on antennal flagellum; G surface of frons; H sculpturing on frons; I surface of gena covered by brochosomes; J sensillum placodeum on frons; K organ of Evans on maxillary plate; L organ of Evans at higher magnification, with adjacent sensillum trichodeum.