American serpentine leaf miner
get damaged before the harvest is affected. The older larvae make wider tunnels. Feeding spots made by adult females can also reduce yield, although except [...] form small plates. In various other crops one finds intermediate forms of tunnelling between these ‘plate mines’ and normal mines, making it an unreliable [...] the larva hatches from the egg, it begins to eat into the leaf at once, tunnelling down into the mesophyll tissue where damage is caused by extensive mines