Gryllus veletis
... that male field crickets of the species Gryllus veletis attract sexually receptive mates by acoustic signals, and one changes his "courtship song" when a female enters his territory?
... that male <a href="./Field_cricket" id="mwEQY" rel="mw:WikiLink" title="Field cricket">field crickets</a> of the species <i id="mwEQc"><b id="mwEQg"><a href="./Gryllus_veletis" id="mwEQk" rel="mw:WikiLink" title="Gryllus veletis">Gryllus veletis</a></b></i> attract sexually receptive mates by <a href="./Stridulation" id="mwEQo" rel="mw:WikiLink" title="Stridulation">acoustic signals</a>, and one changes his "courtship song" when a female enters his territory?