Here is the all information related with Peach twig borer,like its classification, introduction, life cycle, management

1. PEACH TWIG BORER
(Anarsia lineatella )
FAMILY:- Gelechiidae
ORDER:- Lepidoptera

2. • Host: Peaches, apples, cherry, plums, prunes and
apricot.
• Identification:-
Adults are about 1/3 to 3/8 inch long, with narrow
ash gray or steel gray wings. The wings are fringed
with tiny hairs and are mottled with small light and
dark spots.
Larvae are small, red-brown or chocolate brown
caterpillars. The head is dark and mature larvae
have alternating light and dark bands and are up to
1/2 inch long.

5.  Nature of damage
 Larvae injure fruit trees by feeding on the buds and twigs
early in the season.
 Early season larvae bore into the tips of tender twigs killing
the tips and causing lateral twig growth.
 Then the larvae bore into the shoots, causing a
characteristic "flagging" or wilting of the new growth.
 Later generations of larvae feed within shoots or even on
the fruit itself.
 Dead shoots, causing leaves to wilt and eventually kill the
terminal shoots
 Repeated death of terminal branches on young trees,
causing stunted growth and reduced tree vigor.
 Small exit holes on the fruit, often with sticky sap
protruding.

6. • Life cycle:
 The borer overwinters as an immature larva in tunnels
constructed within the crotches of twigs and branches.
These overwintering sites can be identified by the small
chimneys of frass and wood fragments produced by the
feeding of the larvae.
 Larva become active by the pink bud stage and emerge to
feed on buds and young leaves.
 Later the larvae will bore into shoots. These larvae
eventually leave the mined shoots to pupate. Adults then
emerge in mid-to-late May.
 Eggs are laid on fruit, shoots, or undersides of leaves. Eggs
are yellowish-white to orange. The eggs hatch, and these
larva feed on shoots and immature fruit.

7. • Management:-
 Use pheromone traps to time sprays to target the young
larvae before they bore into tissues.
 Scout for flagging of shoots early in season. Detection
indicates a need to protect fruit from later generations of
peach twig borer.
 Cut out and destroy mined shoots below the wilted area to
eliminate larvae.
 Overwintering larvae may be found and destroyed under
thin bark in branch crotches. Look for a buildup of chewed
bark and frass (excrement)
 Early sprays of carbaryl aimed at the newly-hatched larvae,
before they bore into the shoot or fruit, will provide the
best control of peach twig borer.