Communication and Perception
These insects depend on chemical communication (taste/smell), but they also use other means. Males and females find each other with scent chemicals called pheromones, and ants and social wasps and bees use chemicals to identify nestmates and send warnings and other information. Parasitic wasps sometimes leave scent marks on the host insects to tell any other parasitic wasps that they've already laid eggs there. Some ants can also make noises and vibrations to communicate. Of the three groups, wasps are the most visual. They often hunt by sight.
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