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| Agrilus planipennis | |
|---|---|
| Name | Emerald ash borer |
| Regnum | Animalia |
| Phylum | Arthropoda |
| Classis | Insecta |
| Ordo | Coleoptera |
| Familia | Buprestidae |
| Genus | Agrilus |
| Species | A. planipennis |
| Binomial | Agrilus planipennis |
Agrilus planipennis is a metallic wood-boring beetle in the family Buprestidae noted for causing extensive mortality of ash trees across North America and parts of Europe and Asia. First described in the late 20th century taxonomy literature, the species has become a focal point for forestry, conservation, and biosecurity efforts involving institutions and governments. Its detection has mobilized collaborations among agencies such as the United States Department of Agriculture, Canadian Food Inspection Agency, European Commission, and numerous universities.
A. planipennis is classified within the order Coleoptera and family Buprestidae, a lineage treated in major works by entomologists at institutions like the Smithsonian Institution, Natural History Museum, London, and the Royal Ontario Museum. Original descriptions and revisions cite morphological characters used by systematists in monographs referenced by curators at the American Museum of Natural History and the Field Museum. Adults are slender, metallic green beetles approximately 8.5–14 mm long, with diagnostic elytral sculpturing and antennal segmentation that taxonomists compare across genera such as Buprestis and Chrysobothris in diagnostic keys used at the International Congress of Entomology. Larval morphology includes a flattened, legless form with s-shaped galleries characteristic of wood-boring buprestids noted in guides produced by the Forest Service (United States Department of Agriculture) and university extension services including Cornell University and Michigan State University.
Native to parts of northeast Asia, the species occurs historically in regions associated with regional institutes like the Russian Academy of Sciences and the Chinese Academy of Sciences. Since detection outside its native range, A. planipennis has established in provinces and states monitored by agencies including the Ontario Ministry of Natural Resources and Forestry, Minnesota Department of Natural Resources, Michigan Department of Natural Resources, Ohio Department of Natural Resources, and national programs coordinated by the Canadian Food Inspection Agency and the USDA Forest Service. European detections have prompted responses from the European Food Safety Authority and the European Commission. Habitats include urban, suburban, and forested landscapes dominated by ash species managed by municipal authorities like the City of Detroit and park systems such as the National Park Service.
The life cycle typically spans one to two years, with overwintering occurring in the larval stage beneath bark — life history patterns studied by researchers at Pennsylvania State University, University of Toronto, and the University of Guelph. Adults emerge in late spring to summer, a phenology monitored using emergence traps employed by entomology labs at Iowa State University and Ohio State University. Reproductive behavior and voltinism have been evaluated in field trials supported by the National Science Foundation and regional forestry research centers affiliated with the International Union of Forest Research Organizations. Larval feeding produces serpentine galleries that disrupt phloem and cambium, a process documented in reports by the USDA Animal and Plant Health Inspection Service and provincial forestry services.
Primary hosts are North American and Eurasian ash species traditionally managed by agencies such as New York State Department of Environmental Conservation and Michigan State University Extension, including genera recorded in floras curated by the Royal Botanic Gardens, Kew. Documented hosts include species of the genus Fraxinus, with susceptibility varying among species examined by researchers at Yale University, University of British Columbia, and Cornell University. Feeding behavior of larvae focuses on phloem and cambial tissues beneath the bark, leading to girdling and tree death — interactions explored in ecological studies published by collaborations among the International Society of Arboriculture, Society of American Foresters, and academic forestry programs like the University of Minnesota. Adult feeding on foliage is minor compared with larval damage, a pattern cited in extension bulletins issued by land-grant universities including University of Illinois Urbana-Champaign and Ohio State University Extension.
Tree mortality from infestations documented in metropolitan areas such as Detroit, Toronto, Cleveland, and forested regions like the Great Lakes basin has altered urban canopy cover, influencing programs run by municipal departments and nonprofits such as Arbor Day Foundation and The Nature Conservancy. Economic assessments by agencies including the USDA Forest Service, Canadian Forest Service, and provincial ministries estimate billions in costs for removal, replacement, and lost ecosystem services — figures used in policy discussions in bodies like United States Congress and provincial legislatures. Ecological consequences include changes in habitat for species managed by U.S. Fish and Wildlife Service and altered nutrient cycling in systems studied by researchers at Duke University and University of Wisconsin–Madison. Impacts on cultural landscapes have engaged stakeholders such as historical preservation offices and municipal park systems exemplified by the National Capital Commission.
Detection methods include visual surveys, purple prism traps and green panel traps baited with pheromone lures developed by labs at USDA ARS and universities including Pennsylvania State University, and remote-sensing approaches applied by teams at NASA and European Space Agency. Diagnostic confirmation relies on morphological keys held at institutions like the Smithsonian Institution and molecular assays developed in laboratories at Genome Canada and national diagnostic facilities such as the National Plant Protection Organization networks. Citizen science platforms coordinated with organizations like iNaturalist, municipal tree inventories maintained by cities such as Chicago, and extension outreach by land-grant universities contribute to early detection.
Management integrates regulatory measures by bodies including the Animal and Plant Health Inspection Service, quarantine protocols enforced by the Canadian Food Inspection Agency, and municipal ordinances governing removals enforced by city governments such as New York City and Toronto. Silvicultural strategies include sanitation cutting and diversity planting recommended by the Society of American Foresters and implemented by state forest agencies like the Minnesota Department of Natural Resources. Chemical treatments using systemic insecticides applied by certified arborists following guidelines from the International Society of Arboriculture provide tree protection, while biological control efforts releasing parasitoids developed in programs at institutions such as the University of Guelph, USDA Agricultural Research Service, and the Canadian Forest Service seek to establish long-term suppression. Research on resistant cultivars and genetic approaches is underway in academic programs at Cornell University, Michigan State University, and international collaborators coordinated through networks like the International Plant Protection Convention.
Category:Buprestidae Category:Invasive species