Curl Grub Control In Lawns
Curl Grubs are the larvae of beetles in the family Scarabaeidae i.e. scarab beetles. This family is one of the largest beetle families in the world, with more than 2,200 species native to Australia. The larvae of various scarab beetles are known by several common names including ‘curl grubs’, ‘white curl grubs’ and ‘cockchafers’.
The African Black Beetle (Heteronychus arator) is an introduced scarab pest, and is one of the ‘curl grubs’ that damages lawns.
The Argentinian Scarab (Cyclocephala signaticollis) is another introduced scarab pest, which became established in Sydney suburbs in the 1940’s but has since spread to Canberra, northeast NSW, and SE Queensland. Recently several specimens have been identified in Adelaide and Melbourne.
Several native cockchafer species (Adoryphorus spp., Aphodius tasmaniae, Sericesthis spp.) are serious pasture pests in southern Australia. Christmas Beetles (Anoplognathus spp., Calloodes spp., Repsimus spp.) and Rhinoceros Beetles (Xylotrupes ulysses) are also scarab beetles.
Curl Grubs, especially the larvae of African Black Beetle and Argentinian Scarab, can be serious pests of lawns if they become established. Some Curl Grubs may also be pests of other garden plants and potted plants.