In high densities, swarming scarab beetles can cause defoliation in eucalypt canopies.
Swarming scarab beetles (Atomolus spp.) feeding on a eucalypt seedling.
Swarming scarab beetles (Coleoptera: Scarabaeidae), can be important pests in young eucalypt plantations. Several species are pests in Queensland, including Automolus spp., Liparetrus spp. and Epholcis bilobiceps. Because the beetles feed in swarms, they can cause severe defoliation and/or dieback of the growing tips of young trees. They are also known as spring beetles because most damage occurs in spring to early summer when the adults emerge in southeastern Queensland.
Automolus species, Liparetrus species and Epholcis bilobiceps
- Carnegie, A. and Lawson, S.A. and Smith, T. and Pegg, G.S. and Stone, C. and McDonald, J. (2008) Healthy hardwoods. A field guide to pests, diseases and nutritional disorders in subtropical hardwoods. Forest and Wood Products Australia, Victoria.
- Pest Genie - For current information on pesticides registered for use in forestry