HortNews is reporting that forestry researchers in New Zealand are seeking permission to import Cleopus japonicus, a weevil that defoliates the invasive butterfly bush (Buddleja davidii, sometimes known horticulturally as Buddleia). This is in spite of the fact that evidence has shown that the weevils also feed on some of the other species in the genus that are present in New Zealand, albeit non-native. Butterfly bush is quite popular among gardeners worldwide, with many cultivars showcasing an array of brilliantly-colored flowers. The weevil in question, native to Asia, has also been shown to attack native hebes (Hebe spp.) species, but scientists believe the negative impacts of the butterfly bush invasion outweigh the potential weevil risk to native plant species.