Bean fruit borer or midge borer .

image source
Characteristics and types of damage
The head of this nonentity is dark brown to black in color. The body is unheroic white in color. On the reverse of the worm, perpendicular sanguine spots can be seen. The whole nonentity is dark argentine in color. The lower addict is like white cotton.

The worms that come out of the eggs pierce the flowers, flower kids, youthful fruits and access outside and destroy the inner shell. As a result, they fall. Infected seams frequently shrink and fall offprematurely.However, the yield of bean can be oppressively reduced, If the position of attack is high.
Repression Operation

Infected flowers and fruits should be collected by hand every day and put in a hole at least one hand deep.

Clean civilization and collecting and destroying fallen flowers, fruitsetc.

Organic fungicide MNPV should be mixed at the rate of 2 gm per liter of water and scattered 2-3 times in 10-12 days.

Egg- destroying parasitic insects once a week, Trichogramma kylonis (one gram of parasitic nonentity eggs per hectare, from which to full trichograms will crop) and nonentity- destroying parasitic insects, Brackon Habitat (1 Bangkar per hectare). As)

Must be released periodically.
** Harmful Insect Egg Destroyer Trigmara Canolyse and Harmful Insect Destroyer Bracon Habitat is presently retailed by Ispahani Biotech **

Still, spot organic fungicide, Spenosed (Tracer) (4 ml per 10 liters of water), If the position of attack is high. The tree should be scattered 3-4 times every 2 weeks from the time of flowering.