Beetles and weevils are classified in the Order Coleoptera. They represent some of the most significant turf insect pests. Beetles which damage turfgrass are known as Scarab beetles. During their larval stage, they cause the most damage to turf.
Commonly known as white grubs or curl grubs, the larvae live in the soil. They feed on turfgrass roots and high infestations cause significant turf damage. The most important species are the African Black Beetle, the Argentinian Scarab and Pruinose Scarab.
Weevils have pronounced snouts and 2 species cause significant turf damage. The Argentine Stem Weevil is a noteworthy pest of bentgrass/Poa golf greens. Ryegrass is also susceptible to damage from Argentine Stem Weevil. Billbug can be very damaging on warm season grasses. Kikuyu is especially susceptible to this pest.
Chemical control options generally include a programme of adulticides and larvicides to control the different stages in the lifecycle.