Bean podborer

Maruca vitrata

Description
Maruca vitrata is a pantropical insect pest of leguminous crops like pigeon pea, cowpea, mung bean and soybean.  
These destructive pests begin their rampage as larvae or grub-like caterpillars, which eventually morph into tiny moths. 
These larvae are about 7/8 inch long, bluish green with a pink tinge to the backside and a yellowish brown plate behind the dark head.

List of symptoms/signs
Fruit  -  internal feeding
Inflorescence  -  webbing
Leaves  -  webbing
 
Symptoms
Round holes are produced in the corolla of the flowers by the larvae; the pods are distorted by larger larvae and affected by frass. Damage is caused by the larvae boring round holes in the corolla; flowers are converted to a mass of brownish frass in 24 hours.

Plant Protection Products