Information and Credits for Rotating Photos

Previous Gallery of Photos

	Plum Pox Virus Symptoms - The yellow spots on this leaf are evidence of infection by the Pennsylvania isolate of plum pox virus. The leaf is from Chenopodium foetidum, an important indicator species of plum pox disease. U.S. Department of Agriculture, Agricultural Research Service, Photo by Scott Bauer. Image Number K9604-1 Plum Pox profile
	Formosan subterranean termites are feeding on Sudan-red-stained filter paper. Tracking the termites stained with this dye allows researchers to estimate their foraging range and population numbers. U.S. Department of Agriculture, Agricultural Research Service, Photo by Scott Bauer. Image Number K8204-7 Formosan subterranean termite profile
	Spotted Knapweed flowers Norman E. Rees, U.S. Department of Agriculture, Agricultural Research Service, www.invasive.org. Image Number 0021034 Spotted Knapweed profile
	Asian Longhorned Beetle - female ovipositing in sugar maple Dean Morewood, Pennsylvania State University, www.invasive.org. Image Number 1193001 Asian Longhorned Beetle profile
	Day-old sawfly larvae devour a melaleuca leaf in skirmish-line fashion. U.S. Department of Agriculture, Agricultural Research Service, Photo by Jason Stanley. Image Number K7873-3 Melaleuca profile
	Zebra Mussel - Encrusted vector averaging current meter near Michigan city, Ind., in Lake Michigan taken June 1999. National Oceanic Atmospheric Administration (NOAA) Zebra Mussel profile
	Saltcedar - Introduced as an ornamental from Asia, invades riparian (streamside) areas throughout the American West. It accumulates salt in its tissues, which is later released into the soil, making it unsuitable for many native species. Steve Dewey, Utah State University, www.invasive.org. Image Number 1624020 Saltcedar profile
	Russian Knapweed flowers Eric Coombs, Oregon Department of Agriculture, www.invasive.org. Image Number 0022036 Russian Knapweed profile
	Emerald Ash Borer - Adult David Cappaert, Michigan State University, www.invasive.org. Image Number 9000019 Emerald Ash Borer profile
	Giant Reed - December James H. Miller, USDA Forest Service, www.invasive.org. Image Number 2307181 Giant Reed profile
	Sudden Oak Death - Symptoms Joseph O'Brien, USDA Forest Service, www.invasive.org. Image Number 1427046 Sudden Oak Death profile
	Giant salvinia is a fast-growing fern that can clog ponds and lakes. Forming mats up to 2 feet thick, the plant gobbles up oxygen and blocks sunlight needed by other water dwellers. A tiny weevil, Cyrtobagous salviniae, is under study as a biocontrol for this obnoxious invader. U.S. Department of Agriculture, Agricultural Research Service, Photo by Scott Bauer. Image Number K9651-7 Giant Salvinia profile

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