Mango blossom gall midge

The mango blossom gall midge (Dasineura amaramanjarae) is a member of the Cecidomyiidae family within the order Diptera. This insect is widely recognized as a highly specialized pest that targets the inflorescences of mango trees, causing significant agricultural concern in major mango-producing regions.

This pest specifically infests the flowers and buds of the mango tree (Mangifera indica). By targeting the reproductive structures of the plant, the gall midge effectively prevents the development of fruits, leading to a substantial reduction in total yield for commercial farmers.

The biological cycle of this midge is perfectly synchronized with the flowering period of the mango tree. The adult females lay their eggs inside the tight buds. Upon hatching, the larvae feed on the floral tissues, which results in the formation of galls and prevents the flower from opening properly.

Damage caused by this pest is characterized by the distortion of flower panicles, which turn brittle, brown, and eventually drop off. Because the infestation happens during the flowering phase, it disrupts the pollination process and provides entry points for secondary infections by opportunistic fungi and bacteria.

Management and control strategies for the mango blossom gall midge include:

• Regular monitoring of panicles during the early bud-burst stage to detect early signs of infestation.
• Targeted chemical control using systemic or contact insecticides before the flowers open to the point of pollination.
• Proper disposal of infested flower panicles to reduce the larvae population for the next season.
• Encouraging the presence of biological control agents, such as parasitoid wasps that naturally keep midge numbers in check.