Mating swarms of these stiletto flies (Therevidae) superficially resemble those of dance flies (Empididae). Males circle and hover a metre or so above the ground, particularly when the sun shines and the wind is light. Their styles are distinctive, however. Most notably, Ectinorhynchus rely on arm waving rather than nuptial gift giving.

Ectinorhyncus (link to iNaturalist record)