In several stingless bee species many males aggregate in the vicinity
of a nest when a virgin queen is present in the colony and is preparin
g for the nuptial flight. We report such male assemblage for Tetragoni
sca angustula. The departure of a virgin queen from the colony and the
subsequent mating could be video-recorded, because the queen and the
males that had mounted her fell to the ground. Since at least two male
s had lost their genitalia, multiple mating seems to have occurred. Th
is is in contrast with the prevailing view found in literature concern
ing the mating biology of stingless bees.