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Many arthropods tell lies to other arthropods.
For example, female Photuris fireflies lure male Photinus fireflies to their deaths by flashing the males' mating code. However, most lies in the arthropod world are told in the language of chemicals. One common type of propaganda involves using alarm pheromones to scare off predators, attackers and competitors. This is a tricky bit of work. The daddy long-legs definitely would not want to send this message.