The promising results show that the weevils are highly effective at defoliating existing stands of melaleuca saplings, and it seems likely that they will be able to prevent further spread of the invasive tree. The weevils in Florida are already consuming enough new foliage that some trees are showing evidence of die-back. In time, trees may become completely defoliated. Ultimately, the weevils will contribute to stopping the problem at its source, as stressed trees no longer seem to be producing flowers or seeds. Host range studies have been completed with B. melaleucae, and a proposal for field release has been submitted to federal authorities.
Psyllids feed on the phloem and heavy nymphal feeding kills saplings.
A proposal for release of L. zonalis is still pending. Concern about possible vertebrate toxins might prevent eventual release of this species. Australian host range studies have demonstrated the specificity of Fergusonina sp. This fly will be tested soon in the Florida quarantine facility with the eight native species of Myrtaceae. Both leaf bud and flower bud galls are produced by the fly and its symbiotic nematode, Fergusobia sp.