Photo Gallery: Invasives - Home and Garden IPM from Cooperative Extension - University of Maine Cooperative Extension

Photo Gallery: Invasives

: Pair of Brown Marmorated Stink Bugs (Churchville, NY – 4/16/2019)

: Brown Marmorated Stink Bug (adult)

: A peek inside a winter nest of Browntail caterpillars with roughly 30 healthy individuals (Orono, ME; 3/14/2022)

: Browntail Moth (late instar caterpillar stage)

: Browntail Moth (late-instar caterpillars feeding on wild apple leaves; Lincolnville Center, ME – 6/5/2019)

: Browntail Moth (example of a spring/early summer-season nest)

: Browntail Moths; note the brown ‘tail’ at the end of the abdomen (Kennebec County, Maine, 7/1/2021)

: European Red Ant — Myrmica rubra (also referred to as the European Fire Ant) (Invasive)

: Hemlock Woolly Adelgid (an invasive pest)

: Portion of an Eastern Hemlock twig infested with Hemlock Woolly Adelgid (North Berwick, ME; 4/15/2022)

: Hemlock Woolly Adelgid (nymph/”crawler” stage; visible in center of photo) (Mount Desert, ME; June 23rd, 2021) The nymphs (“crawlers”) are reddish-brown in color and migrate to new locations on the branches where they subsequently settle into place and feed at the base of the needles.

: Hemlock Woolly Adelgid (nymph/”crawler” stage; one is shown here at the tip of one of the needles) (Mount Desert, ME; June 23rd, 2021)

: Hemlock Woolly Adelgid (winged adult) A winged adult hemlock woolly adelgid is rather rare. They fly off in search of tiger tail spruce (Picea torano) trees to infest, but we do not have that species of spruce in the US and they are incapable of establishing themselves on any of our USA species of spruce trees.

: Spotted Wing Drosophila flies (actual size: 2-3 mm)

: Spotted Wing Drosophila fruit flies (Drosophila suzukii) (a.k.a. the Asian fruit fly) stuck to a UMaine Extension sticky trap; The males have a prominent, dark spot on each wing, as can be seen in this photo.

: A male Spotted Wing Drosophila

: Pupa of a Spotted Wing Drosophila

: Closeup view of the saw-like ovipositor which allows Spotted Wing Drosophila to cut into healthy soft-skinned fruits

: Spotted Wing Drosophila Trap, photo by David Handley

Additional Photos and Information: Asian Longhorned Beetle (no confirmed sightings in Maine as yet) Brown Marmorated Stink Bug — Halyomorpha halys (Maine Dept of Agriculture, Conservation & Forestry) Browntail Moth Emerald Ash Borer (found in Maine on 5/22/18 in Madawaska and it has now been confirmed in three southern