The larvae are leaf miners on a large diversity of usually herbaceous plants.

In tobacco, the larvae are leaf miners and can cause severe damage to leaves, making them weigh less.

Systemic controls for leaf miners as yet have not been very effective.

Leaves often marked by the trail of a leaf miner.

They are leaf miners, tunnelling inside the leaves of the food plant to avoid predators.

The best hope, he says, is that the leaf miner outgrows itself and dies out.

For some growers it is already too late to fight the leaf miner.

The minute larvae usually are leaf miners but some species also mine seeds or bark of trees.

Plants are occasionally affected by leaf miners or chlorosis of the leaves.

But longer tunnels mean the leaf miner has packed her pickax and left.