State Key Laboratory of Rice Biology, Key Laboratory of Agricultural Entomology, Ministry of Agriculture, Institute of Insect Sciences, Zhejiang University, Hangzhou, China.
Microsc Res Tech. 2012 Nov;75(11):1492-512. doi: 10.1002/jemt.22093. Epub 2012 Jul 6.
The antennal sensilla of both genders of macropterous and brachypterous adults of the small brown planthopper, Laodelphax striatellus (Fallén) (Hemiptera: Delphacidae) were examined using light and scanning electron microscopy. Scanning electron microscopy revealed seven types of antennal sensilla in adult L. striatellus which were not evenly distributed on all antennal segments. Sensilla chaetica, a sensillum campaniformium and a Böhm bristle were found on the scape. Sensilla chaetica, sensilla trichodea, sensilla placodea which always present as plaque organs, sensilla basiconica and a sensillum campaniformium were present on the pedicel. Three sensilla basiconica and one sensillum coeloconicum containing two sensory pegs were located on the swollen sensory region of the basal flagellum. Pores observed on the surface of s. trichodea and s. placodea suggest these organs probably play a role in olfaction, whereas the aporous s. chaetica with flexible sockets probably function as mechanoreceptors. The aporous s. basiconica with inflexible sockets are probable to be thermo-hygroreceptors while the Böhm bristle and s. campaniformia may act as antennal proprioceptors. The function of s. coeloconicum remains uncertain. The numerical dominance of antennal olfactory receptors suggests olfaction is an important function of the antenna in L. striatellus. Although a small degree of sexual/wing dimorphism was observed in the numbers of sensilla and in the length and width of antennae and antennal segments, the basic shape and structure of the antennae and antennal sensilla did not differ between the gender or wing form in L. striatellus.
利用扫描电子显微镜观察了长翅型和短翅型褐飞虱（Laodelphax striatellus）（半翅目：飞虱科）两性成虫的触角感器。扫描电子显微镜显示，褐飞虱成虫的触角上有 7 种感器，它们在所有触角节上的分布并不均匀。触角上有刚毛感器、钟形感器和博氏鬃毛，这些感器都存在于触角梗节上。触角鞭节上有刚毛感器、毛形感器、栉形感器（常以栉形器的形式出现）、腔锥形感器和钟形感器。基节膨大部分有 3 个腔锥形感器和 1 个含有 2 个感觉刺的腔锥形感器。在毛形感器和栉形感器的表面观察到的孔表明这些器官可能在嗅觉中起作用，而无孔的刚毛感器具有灵活的窝，可能起机械感受器的作用。无孔的腔锥形感器具有不可弯曲的窝，可能是热湿度感受器，而博氏鬃毛和钟形感器可能作为触角本体感受器。腔锥形感器的功能仍然不确定。触角嗅觉感受器的数量优势表明，嗅觉是褐飞虱触角的一个重要功能。尽管在感器数量以及触角和触角节的长度和宽度上观察到了两性和翅型的微小程度的性二型性和翅二型性，但褐飞虱的触角和触角感器的基本形状和结构在性别或翅型之间没有差异。
