ABSTRACT
Most works on bioacoustics of insects have been concerned with signals and the structure of
the communication system, either in a single species or in groups of closely related ones.
Investigations of acoustic interactions between sympatric species dwelling in the same biotope are
scarce. Still, information on the subject is available both for groups of sympatric species belonging
to the same taxonomic unit, e.g. singing cicadas, and for communities of sound-producing animals
as a whole.
