Innervation of mouthpart sensilla in the dragonfly Brachythemis contaminata (Fabricius) (Anisoptera: Libellulidae)

Neuroanatomical studies demonstrate single dendritic innervation of trichoid sensilla, basiconic sensilla and microtrichia, and multidendritic innervation of the papillae and sensory pegs. These sensilla can therefore be considered as mechano- and chemoreceptors respectively. The campaniform sensilla are innervated by several dendrites and may function as proprioceptors. No innervations of the spines, teeth, hooks and acanthae was observed suggesting non-sensory nature.