Contents:

One pheromone lure of Leucinodes orbonalia

Identification-

The length of the forewings is 8.5–10.5 mm for males and 9.5–12 mm for females.

The forewing ground colour is white, with a light- to dark brown basal area, delimited by a dark brown to grey antemedial line.

The central dorsum has a prominent orange to dark brown L-shaped or triangular spot leading to the forewing center and often meeting with the distal discoidal stigma.

The antemedial line is sinuate, more or less distinct, but with a prominent sub-costal bulge.

The subapical half of the termed has a half-moon-shaped brown to grey-grown spot.

The marginal line is dotted. The hind wing ground color is white. The internal area is white, with a discoidal spot, basically often with an auxiliary spot.

The medial line is sinuate, the distal half approaching the discoidal spot, then turning towards the dorsum. The external area is pale brown to grey with a dotted marginal line.

Life Cycle-

The female lays about 250 eggs. Within 3 to 5 days larvae hatch out from the eggs. The larva enters the plant tissues immediately after its hatching and after five moultings it becomes fully matured.

The fully grown larva is stout, pink-colored with a brown head. The body bears warts all over the body through which hairs protrude. Larval period last for about 10-15 days.

The matured larva comes out of the host tissues and forms pupa among the fallen leaves or on the surface of the stem and fruits of the host plant.

The adult moths live for two to five days. The life cycle is completed in 21-43 days. There are five overlapping generations in their active phase in a year.

During winter the larvae hibernate inside the soil.

Nature of Damage-

Larva is an internal feeder it immediately bore into the nearest tender shoot or flower or fruit just after hatching. Soon after boring into shoots or fruits, they plug the entrance hole with excreta.

As a result, the affected twigs flower, and fruits dry up and may drop off. Larval feeding, inside shoots, results in wilting of the young shoot.

The presence of wilted shoots is the surest sign of damage by this pest. The damaged shoots ultimately wither and drop off.

This reduces plant growth, which in turn, reduces fruit number and size. New shoots can arise but this delays crop maturity and the newly formed shoots are also subject to larval damage.

Larval feeding in flowers results in failure to form fruit from damaged flowers. Larval feeding inside the fruit results in the destruction of fruit tissue.

The feeding tunnels are often clogged with frass. This makes even slightly damaged fruit unfit for marketing. The yield loss varies from season to season and from location to location.

Target Plants-

Brinjal

Usage Instruction - Cut open this pack and slide the lure piece outside. Do not touch the lure with bare hands.

Fix this lure properly in a trap by sliding it into the hole provided in the delta trap. Replace the lure at the recommended duration.

Wash hands thoroughly before and after handling the trap and lure. Discard used lure by burning or burying underground.

Trap to be used: Delta Trap

Number of traps per Acre: 15 to 20

Life of Lure: 60 Days

 WATER TRAP-

consists of a water trough and a lure holder with a canopy for the pheromone which attracts specific insects. It is easy to assemble on a single pole.

Insects attracted to pheromones fall into the water in the trough, drown, and die. The trap needs to be set up at a height of 3 - 4 feet from ground level for maximum impact. Fill half the trough with water or water mixed with oil or an insecticide and fix the lure into the holder.

The dead insects can be removed from the trap at appropriate intervals and the tub refilled with water or water mixed with oil or an insecticide.

The frequency of clearing the trap depends on the number of catches and level of infestation.