Grass grub are found throughout New Zealand.
The adult form is the common brown beetle which can be seen at dawn and dusk in late spring/early summer.
The larvae eat plant roots, damaging pasture, orchards and vineyards.
In pasture, the grubs feed on the roots causing tell-tale dead patches or yellowed alreas.
They difficult to contrls as they are usually found about 13-17 cm below ground in small tunnels (about 1/2 cm wide).
The adult beetles also damage fruit trees by feeding on the leaves.