Micropezidae

Stilt-legged fly shows the peculiar behaviour of flicking forelegs all the time. This behaviour is significant from an evolutionary point of view. By doing so, they mimic the movement of the antennae of some predatory wasps. Hence, most of the time they escape from predation and live life safely in the wild. Even at the moment of copulation, the female always shows this leg flicking behaviour. They copulate for quite a long time with intervals. At the end of each part, the male gives off salivary droplet to the female as a gift. The drop of liquid comes from male’s mouth and falls on the head of female; and the female transfers the droplet by the foreleg to her own mouth.