Filbert: Apple mealybug categories: Filbert Filbert Insects Tree Fruits last review date: 2026-05-05 11:47 Apple mealybugs and nests on twigs Photo by: E.H. Beers Biology Apple mealybugs are gray, flat, scale-like insects found on trees during winter and spring. They are typically found in cottony clusters on twigs and the underside of leaves, often on […]
Filbert: Brown marmorated stink bug categories: Filbert Filbert Insects Tree Fruits last review date: 2026-05-05 01:30 Brown marmorated stink bug adult Photo by: M. Bush 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 a wide variety […]
Filbert: Filbert aphid categories: Filbert Filbert Insects Tree Fruits last review date: 2026-05-05 02:12 Aphid colony on leaf Photo by: A.L. Antonelli Biology Filbert aphids are small, yellowish-green, pear-shaped insects typically found on the leaves. Aphids are often found in colonies on the tender new growth. Heavy aphid feeding may result in stunting and distortion […]
Filbert: Filbert bud mite categories: Filbert Filbert Insects Tree Fruits last review date: 2026-05-14 07:46 Swollen filbert bud from mite feeding Photo by: R.S. Byther Biology Filbert bud mites are tiny eriophyid mites which feed in the leaf and flower buds. The mites are yellowish and sausage-shaped and are difficult to see with the unaided […]
Filbert: Filbert leafroller categories: Filbert Filbert Insects Tree Fruits last review date: 2026-05-14 07:53 Filbert leafroller larva causing damage on leaf Photo by: K. Grey Biology The filbert leafroller is a greenish caterpillar with a light to dark brown head. The caterpillars are about 3⁄4″ long at maturity. They feed inside webbed or rolled leaves, […]
Filbert: Filbertworm categories: Filbert Filbert Insects Tree Fruits last review date: 2026-05-14 07:59 Nut damaged by filbertworm larva Photo by: K. Grey Biology The filbertworm is the larval stage of a gray to reddish moth. The adult moth has copper- to gold-colored bands across the forewings and a wingspread of approximately 1⁄2″. The female moth […]
Filbert: Lecanium scale categories: Filbert Filbert Insects Tree Fruits last review date: 2026-05-14 08:15 Lecanium scales on twig Photo by: R.S. Byther 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 […]
Filbert: Omnivorous leaftier categories: Filbert Filbert Insects Tree Fruits last review date: 2026-05-14 08:27 Necrosis on leaf from leaftier feeding Photo by: K. Grey Biology The omnivorous leaftier is the caterpillar of a bell-shaped tortricid moth. The small larvae tend to be quite active when disturbed, often wiggling vigorously backwards or dropping from the plant […]
Filbert: Tent caterpillars categories: Filbert Filbert Insects Tree Fruits last review date: 2026-05-14 09:43 Tent caterpillars and webbing Photo 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 […]