Come of the pests in the garden .. Leafminers

Leafminers—Liriomyza spp.

Leafminer adults are small black and yellow flies. Larvae are yellowish maggots that feed beneath the leaf surface.

Identification of species | Life cycle

Damage

The most obvious evidence of leafminers is the twisting trails (or mines) the larvae leave as they feed beneath the leaf surface. Damage will not be serious on most plants older than seedlings, although it may make spinach or chard unsightly.

Solutions

Leafminers rarely require treatment in gardens. Small seedlings can be protected by protective cloth. On plants such as cole crops, lettuce, and spinach, clip off and remove older infested leaves. Leafminers are often kept under good control by natural parasites. Insecticides are not very effective for leafminer control.