Spartium junceum

In the USA, three insects have been introduced as biological control agents of broom species. Leucoptera spartifoliella (Scotch broom twig miner moth) and Exapion fuscirostre (Scotch broom seed weevil) are specific to Cytisus scoparius (scotch broom), but Bruchus villosus (Scotch broom seed beetle) also affects S. junceum (DiTomaso and Kyser, 2013).