Boxelder Twig Borer
The boxelder twig borer, a small whitish yellow caterpillar with a dark head, destroys the buds and tender shoots of boxelder and red maple. Feeding by this insect can cause trees to become bushy and to lose their natural shape. By the time ... [... more]
University of Kentucky |
NCSU: ENT/ort-106 BLACK TWIG BORER
BLACK TWIG BORER, Xylosandrus compactus (Eichhoff), Scolytidae, COLEOPTERA Black twig borers drill into the thin twigs of dogwood, grape, magnolia, live oak, laurel oak and many other plants from shade trees to orchids. Seemingly healthy plants ... [... more]
NC State University Coop Extension |
Scientific Name: Anarsia lineatella
The peach twig borer is widely distributed throughout California and is found on several hosts, but is rarely a problem in mature cherry orchards. The adult moth is about 0.3 to 0.5 inch long, with steel gray mottled forewings. Small larvae are ... [... more]
University of California IPM |
Scientific name: Anarsia lineatella
Small peach twig borer larvae are almost white with a distinct black head. As larvae mature they become chocolate brown with alternating dark and light bands around the abdomen. The light, intersegmental membranes contrasted with the brown body ... [... more]
University of California IPM |
Scientific Name: Polycaon confertus
UC Management Guidelines for Branch and Twig Borer on Cherry. The branch and twig borer is a slender brown beetle about 0.5 to 0.66 inch long. The body is cylindrical and the head and prothorax are narrower than the body proper. The beetle lays ... [... more]
University of California IPM |
Scientific name: Melalgus (=Polycaon) confertus
UC Management Guidelines for Branch and Twig Borer on Prune. The branch and twig borer is a slender brown beetle about 0.5 to 0.67 inch long. The body is cylindrical and the head and prothorax are narrower than the body proper. The beetle lays ... [... more]
University of California IPM |
WHEN TO PUT OUT TRAPS
In peaches, pheromone traps are used to monitor adult emergence and flights of San Jose scale and certain moths including oriental fruit moth, omnivorous leafroller, peach twig borer and obliquebanded leafroller. Use the information obtained from ... [... more]
University of California IPM |
Fruit Sampling
Examine 100 to 200 randomly selected fresh fruit on the tree (10-20 fruit on 10 trees) for damage caused by: Peach twig borer: shallow feeding holes. Over time these may appear as scabs. Oriental fruit moth: often small entry holes that may be ... [... more]
University of California IPM |
Where and when
In apricots, pheromone traps are used to monitor peach twig borer, peachtree borer, and obliquebanded leafroller. The traps are used to detect first moth emergence and/or to establish a biofix-an identifiable point in the life cycle-at which ... [... more]
University of California IPM |
Grower/Orchard/Variety:_________________________________
Information about Shoot Strike Monitoring in Nectarine. Shoot tips are killed when oriental fruit moth and peach twig borer larvae bore inside them and feed, resulting in "shoot strikes." Monitoring shoot strikes helps determine if the oriental [... more]
University of California IPM |
Fruit Evaluation at Harvest
Take a fruit damage sample in mid-July to assess the effectiveness of the current year's IPM program and to determine the needs of next year's program. Fruit damaged by peach twig borer drops from the tree before harvest and would be missed in a ... [... more]
University of California IPM |
Dogwood Twig Borer
The larvae feed down the center of the branch making a long series of closely placed round holes for the exudation of frass. Periodically the larvae cut off portions of the twig from within and continues feeding on the green wood. Larvae tunnel ... [... more]
Virginia Tech Extension |
