Morphology, distribution, and abundance of antennal sensilla of male and female macropterous and brachypterous small brown planthopper, Laodelphax striatellus (Fallén) (Hemiptera: Delphacidae)
Version of Record online: 6 JUL 2012
Copyright © 2012 Wiley Periodicals, Inc.
Microscopy Research and Technique
Volume 75, Issue 11, pages 1492–1512, November 2012
How to Cite
Fu, B.-X., Bellis, G. A., Hong, J., Wang, J.-R., Wu, Q., Tang, Q.-Y., Cheng, J.-A. and Zhu, Z.-R. (2012), Morphology, distribution, and abundance of antennal sensilla of male and female macropterous and brachypterous small brown planthopper, Laodelphax striatellus (Fallén) (Hemiptera: Delphacidae). Microsc. Res. Tech., 75: 1492–1512. doi: 10.1002/jemt.22093
- Issue online: 22 OCT 2012
- Version of Record online: 6 JUL 2012
- Manuscript Accepted: 5 JUN 2012
- Manuscript Received: 21 FEB 2012
- Development Program of the People's Republic of China from the Ministry of Science and Technology (973 Program). Grant Numbers: 2010CB126200, NSFC project (30971908), MOA (201003031)
- scanning electron microscopy;
- light microscopy;
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. Microsc. Res. Tech. 2012. © 2012 Wiley Periodicals, Inc.