The romantic of the riverbank. A fly that gives gifts. The dance fly is a predatory dipteran with slender, elegant anatomy and a behavioural repertoire virtually unique within the insect world. These aerial acrobats are best known for their sophisticated nuptial gifts. A fly that brings presents. The male captures a small insect such as a midge or gnat. He occasionally wraps it in a delicate, silken balloon produced from specialised glands. This gift-giving behaviour serves as a vital biological signal of the male's hunting prowess. It provides the female with the essential protein required for egg development. A fly that buys love with food. During the fading light of dusk, these flies congregate in elaborate, swarming dances above the surface of freshwater streams and forest edges. They perform a series of rhythmic, synchronised manoeuvres that turn the fundamental struggle for survival into a choreographed performance of twilight vitality. Beyond their ceremonial displays, dance flies are highly efficient precision hunters. They have long, spindly legs and a downward-pointing proboscis designed for piercing the exoskeleton of their prey. They patrol the air with remarkable agility, snatching other small flies mid-flight with accuracy that rivals larger dragonflies. The life cycle begins in damp soil or aquatic margins. The larvae act as beneficial scavengers or predators of other small invertebrates, making them an integral component of the New Zealand riparian food web. The riverbank is quiet. The dance flies swarm at dusk, a dancing cloud above the water. The males carry their gifts, wrapped in silk. The females choose. The river flows. The flies do not know they are romantic. They just want to mate. That is what dance flies do.