Assembling behaviour associated with mating was investigated
in Triatoma infestans. The spatial distribution of both sexes
was observed by video films, in the presence or absence of a
copulating pair. Males aggregated around copulating pairs.
Females did not exhibit this behaviour and their mean spatial
density remained unaffected. Spontaneous aggregation tendency
was observed in males in the absence of a copulating pair, but
the temporal course significantly differed from that observed
in the presence of a mating pair. Results support the
existence of an aggregation signal that is released during
mating, affecting the behaviour of males.
