Comptonia peregrina is used as a food plant by the larvae of some Lepidoptera species, including Bucculatrix paroptila, Grey Pug, Setaceous Hebrew Character, Io moth, and several Coleophora case-bearers: C. comptoniella, C. peregrinaevorella (which feeds exclusively on Comptonia), C. persimplexella, C. pruniella and C. serratella.
Myrica species are used as food plants by the larvae of some Lepidoptera species including Brown-tail, Emperor Moth, and Winter Moth as well as the bucculatricid leaf-miners Bucculatrix cidarella, Bucculatrix myricae (feeds exclusively on Myrica gale) and Bucculatrix paroptila and the Coleophora case-bearers C. comptoniella, C. pruniella, and C. viminetella.