Details of the antenna of fourth nymphal instar <i>Lycorma delicatula</i> and in adults.

<p>(A) General view of fourth nymphal instar antenna, showing the distribution of sensilla on antennal surface. (B) Basal bulb of antennal flagellum in fourth instar, PO 1 are absent. (C) PO 2 on the pedicel of the fourth instar, some pores (po) are visible. (D) General view of adult antenna, showing the distribution of sensilla on antennal surface. (E) Basal bulb of adult antennal flagellum. (F) PO 2 in adult pedicel. Scale bars: A = 250 μm; B = 25 μm; C = 20 μm; D = 250 μm; E = 50 μm; F = 25 μm. Abbreviations: AA, apical arista of antennal flagellum; BB, basal bulb of antennal flagellum; BO, Bourgoin’s organ; CD, cuticular denticles; f, flagellum; FO, folds; p, pedicel; PO 2, plaque organ type II; s, scape; SD, sclerotized denticles.