n.
In zoology, one of a pair of slender, segmented sensory organs on the head of insects , myriapods (e.g, centipedes , millipedes ), and crustaceans .
Antennae of insects, which are movable, are believed to serve as both tactual and smell receptors; in some species, the development of elaborate antennal plumes and brushlike terminations has led to the suggestion that they also serve for hearing. Evidence supports this idea only for the mosquito , whose antennae are attached to specialized structures stimulated by vibrations of the antennal shaft. In social insects (e.g., ants ), antennae movements may serve as communication.