Balloon fly with silk-spinning front legs.

Balloon fly with silk-spinning front legs.

Observation - Balloon fly with silk-spinning front legs. - UK and Ireland. Description: A very small male dance fly with special front legs. All dance flies offer courtship gifts of prey they've caught to females, but Hilara goes a step further, wrapping them in silk spun from silk glands on its weird front legs and carry them in courtship

A very small male dance fly with special front legs. All dance flies offer courtship gifts of prey they've caught to females, but Hilara goes a step further, wrapping them in silk spun from silk glands on its weird front legs and carry them in courtship dances, and mate while a a female unwraps it to feed. Some cheat and carry empty "balloons"!