Mango gall midge

The mango gall midge Procontarinia mangiferae is a specialized and destructive pest belonging to the order Diptera and the family Cecidomyiidae. This tiny insect is a major concern for mango producers worldwide, as its larvae can cause extensive damage to both vegetative and reproductive parts of the tree.

This pest exclusively attacks Mangifera indica. The larvae induce the formation of galls, which are abnormal growths on plant tissues. These galls typically appear on young leaves, flowers, and developing fruits, significantly impacting the plant's overall vigor and yield potential if left unmanaged.

The biology and lifecycle of the pest are synchronized with the growth stages of the mango tree. Females oviposit in young, tender tissues. Upon hatching, the larvae penetrate the epidermis and secrete chemicals that induce gall formation. The larvae feed and develop safely inside these galls, protected from predators and many contact insecticides, until they pupate.

Damage caused by the mango gall midge is visible as numerous small, raised spots or bumps on leaves and fruit surfaces. This infestation leads to leaf distortion, flower drop, and fruit deformity. The damaged fruit loses its commercial value, leading to severe economic consequences for growers during the harvest season.

Management strategies for controlling the mango gall midge include:

• Implementing regular monitoring programs using sticky traps to detect adult activity.
• Pruning and removing infested leaves and fruits to reduce the pest population density.
• Applying systemic insecticides during critical periods of adult emergence and egg-laying.
• Encouraging the presence of natural predators and parasitoids that act as biological control agents in the orchard.