Apple: Aphids categories: Apple Apple Insects Tree Fruits revision date: 2023-04-04 12:00 Rosy apple aphidsPhoto by: R.S. Byther Biology Three aphids are important pests of apple. Green apple aphids feed throughout the growing season on terminals, causing twisted and deformed leaves and stunted shoots. They produce honeydew, a sweet, sticky material which may become covered […]
Apple: Apple ermine moth categories: Apple Apple Insects Tree Fruits revision date: 2023-04-04 12:00 Apple ermine mothPhoto by: A.L. Antonelli Biology The apple ermine moth is an imported pest which feeds exclusively on apples. The adult moth has silver-white wings spotted with black. Larvae are gray, cream-colored, or greenish with dark spots along the sides. […]
Apple: Apple maggot categories: Apple Apple Insects Tree Fruits revision date: 2024-04-10 03:43 Apple maggot tunnelingPhoto by: M. Bush Biology The apple maggot is potentially a serious pest of apples. Transportation of home-grown fruit from infested to non-infested areas is prohibited in Washington. The adult apple maggot is a small fly about 1⁄4″-3⁄8″ in length. […]
Apple: Apple-and-thorn skeletonizer categories: Apple Apple Insects Tree Fruits revision date: 2022-12-05 12:00 Apple-and-thorn skeletonizer caterpillar feeding on leafPhoto by: A.L. Antonelli Biology The adult of the apple-and-thorn skeletonizer is a small dark-brown or reddish-brown moth. It overwinters as a pupa or an adult, with the females laying eggs in the spring. The caterpillars are […]
Apple: Brown marmorated stink bug categories: Apple Apple Insects Tree Fruits revision date: 2023-04-04 12:00 Brown marmorated stink bug damage to apple fruitPhoto by: D. Pfeiffer, Virginia Tech Biology The brown marmorated stink bug (BMSB) is an introduced pest species from Asia that is spreading quickly across the United States. Nymphs and adults feed on […]
Apple: Codling moth categories: Apple Apple Insects Tree Fruits revision date: 2024-04-10 03:43 Red Delicious apple infested with codling moth larvaePhoto by: M. Bush Biology The gray wings of adult codling moths are marked with dark brown bands near the wingtips. Wingspan is 1/2″ to 3/4″. Adult females lay eggs on leaves or fruit. The […]
Apple: Cutworms and armyworms categories: Apple Apple Insects Tree Fruits revision date: 2022-12-05 12:00 Climbing cutworm, dark brown and hairlessPhoto by: K. Grey Biology Cutworms and armyworms are the larvae of noctuid moths. These common moths are typically medium-sized with fairly dull coloration. The gray to tan caterpillars are hairless, nocturnal, and generally spotted, striped, […]
Apple: Earwigs categories: Apple Apple Insects Tree Fruits revision date: 2022-12-05 12:00 Adult European earwigPhoto by: M. Bush Biology Earwigs are reddish-brown insects about 3/4″ or less in length. Both males and females have pincers at the rear end. Earwigs are largely beneficial, feeding on many pests such as aphids (including apple aphids), mites, and […]
Apple: Fruittree leafroller categories: Apple Apple Insects Tree Fruits revision date: 2024-04-08 11:46 Leafroller damage to fruitPhoto by: R.S. Byther Biology The larvae of the fruittree leafroller feed on leaves, flower parts, and sometimes young fruit. They are pale to dark green with a shiny black head and are about 3/4″ long at maturity. Typical […]
Apple: Leafhoppers categories: Apple Apple Insects Tree Fruits revision date: 2022-12-05 12:00 Leafhoppers and damage on apple leafPhoto by: E.H. Beers Biology Leafhoppers are typically found on the underside of leaves. Immature leafhoppers (nymphs) are usually less than 1/10″ long and white to greenish or yellowish in color. Adults are white and about 1/8″ long. […]
Apple: Leafrollers categories: Apple Apple Insects Tree Fruits revision date: 2024-04-08 11:46 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: 2022-12-05 12:00 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: 2024-04-08 11:46 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: 2024-04-08 11:46 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: 2023-04-04 12:00 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 […]