7. Flower gall midge: Procystiphora mangiferae, Erosomyia indica, Dasineura    amaramanjarae (Cecidomyiidae: Diptera)

Distribution and status: Distributed throughout India

Host range: Mango

a. Procystiphora mangiferae

Damage symptoms : The maggot feeds on stalks of stamen, anthers, ovary.

Bionomics : The adult fly is light orange in colour. It lays eggs inside the flower buds. The maggots pupates inside the bud itself. The life cycle is completed in 12- 24 days.

b. Erosomyia indica

Damage symptoms : Maggots attack the inflorescence stalk, flower buds and small developing fruits. Inflorescence is stunted and malformed and buds do not open.

Bionomics : Adult fly is yellowish and lays eggs on the inflorescence peduncle or base of the developing fruit. Pupation occurs in soil.

c. Dasineura amaramanjarae

Damage symptoms : Maggots feed inside buds and the buds fail to open and drop down.

Bionomics : Maggots hibernate in soil and carry over to the next year and when favourable condition occurs pupate and emerge as adults.

Management
        
Spray dimethoate 30 EC or methyl demeton 25 EC 3.0 - 4.0 L in 1500-2000 L of water per ha (10-15 L of spray fluid per tree)