[1] This species of fly is most known for sex role reversal during courtship, as females put on exaggerated displays and congregate in leks to attract males.

Female dependence on males for nutrition is the principal cause for sex role reversal in this species of fly.

[2] The lengthened dorsal section, in addition to shortened wings, aids the male's ability to approach the female from beneath during mating.

[4] Females return to the same lek every night, even if already inseminated, unless there is significant inclement weather, like continued rain or winds above 14 km/h.

[4] Female dependence on males for nutrition is the principal cause for sex role reversal in this species of fly.

[5] Before entering a lek, females rest on nearby vegetation and swallow air to inflate expandable pouches on the sides of the abdomen.

Model experiments showed that males give sexual preference to females with larger abdomen size.

Females hover over the lek site to provide them with backlighting so that they appear as silhouettes in order to exaggerate their size and deceive males.

Stratification within leks was observed, as females with larger tibiae hover at lower positions in the swarm to receive the most copulations.

[4] They enter leks from below, or if they arrive before the females congregate, they fly by the swarm area several times and wait on nearby vegetation.

The two then fly away together at a faster speed away from the swarm, during which time the male gives the female the nuptial gift and recedes into copulating position.