Aerial-swarming
Guides
Rhamphomyia longicauda
Long-tailed Dance Fly
Rhamphomyia longicauda is a dance fly species renowned for its exceptional sex-role reversal in mating behavior. Females form aerial leks at dawn and dusk, displaying inflated abdominal sacs and ornamental leg scales to attract males, who are the choosy sex. Females are obligate recipients of nuptial gifts—prey items captured by males—because they cannot hunt for themselves. This nutritional dependence drives the reversal of typical courtship roles. The species has been extensively studied as a model for sexual selection and the evolution of female ornamentation.