Apple: Leafrollers categories: Apple Apple Insects Tree Fruits revision date: 2024-06-05 10:25 Leafroller damage showing rolled and damaged leavesPhoto by: A.L. Antonelli Biology Characteristic signs of leafroller feeding include leaves that are rolled and tied in place with webbing, often with frass in the webbing. Damaged leaves are often near shoot tips and may be […]
Apple: Lecanium scale categories: Apple Apple Insects Tree Fruits revision date: 2024-06-05 08:29 Overwintering lecanium scale on apricotPhoto by: M. Bush Biology Lecanium scales are shiny brown insects found on twigs. Adults are 1/8″-1/4″ in diameter and roughly turtle-shaped. They may have light markings or appear somewhat waxy. Crawlers (immature scales) are flatter. Scales produce […]
Apple: San Jose scale categories: Apple Apple Insects Tree Fruits revision date: 2024-06-05 08:29 San Jose scale encrusting the stem end of an applePhoto by: M. Bush Biology San Jose scale is an armored (hard) scale found on many deciduous trees and shrubs including apple, cherry, elm, maple, poplar, and willow. The scale insects are […]
Apple: Spider mites categories: Apple Apple Insects Tree Fruits revision date: 2024-06-05 02:04 Spider mites under microscopePhoto by: L.K. Tanigoshi Biology European red mites and other spider mites can cause damage in apple trees. The European red mite is a tiny red mite. Other spider mites vary in color from yellow to green to black, […]
Apple: Tent caterpillars categories: Apple Apple Insects Tree Fruits revision date: 2024-06-05 10:25 Tent caterpillars and webbingPhoto by: R.S. Byther Biology Two species of tent caterpillar are common in Washington. The forest tent caterpillar is about 2″ long at maturity and has a bluish body with black and white markings. This species makes silk mats […]
Apple: Tentiform leafminer categories: Apple Apple Insects Tree Fruits revision date: 2022-12-05 12:00 Apple tentiform leafminer damagePhoto by: J.F. Brunner Biology This small caterpillar larva mines the leaves of apple (primary host) and sometimes cherry, prune and pear. High populations in late summer can reduce fruit size in certain varieties. Parasites usually keep numbers down […]