The porina caterpillar causes similar damage to lawn grass and pastures as grass grub. However it tends to feed on leaves rather than roots.
The adult Porina moth is the fat brown moth that flies around you lights at night. It lays 100+ eggs on grass in spring and summer. On hatching the caterpillars move to leaf bases where they feed. As they grow they burrow into the soil and emerge at night to feed on leaves. They do most damage in autumn and early winter. Compared to Grass Grub, Porina caterpillar is the more easily controlled pest.
To get rid of porina caterpillar:
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