Scanning electron microscopy observations of antenna sensilla of Tetrastichus brontispae

The morphology of sensilla on the antennae of Tetrastichus brontispae Ferriere adult were observed under a scanning electron microscope.Eight distinct types of sensory receptors were found,including sensilla trichodea,sensilla multiporous plate,sensilla chaetica,sensilla basiconica,sensilla auricillica,sensilla mammilliformia,sensilla coeloconica and bhm bristles,of which sensillum trichodeum and sensillum placodeum were both the most numerous and widely distributed.Sexual dimorphism in antenna size and the shape,size,number and distribution of sensilla,was apparent.