Emerald ash borer - wikipedia Emerald ash borer Emerald ash borer Scientific classification Kingdom : Animalia Clade : Euarthropoda Class : Insecta Order : Coleoptera Family : Buprestidae Genus : Agrilus Species : A. planipennis Binomial name Agrilus planipennis Fairmaire, 1888 Synonyms Agrilus feretrius Obenberger Agrilus marcopoli Obenberger Agrilus planipennis, commonly known as the emerald ash borer, is a green buprestid or jewel beetle native to northeastern Asia that feeds on ash species. Females lay eggs in bark crevices on ash trees, and larvae feed underneath the bark of ash trees to emerge as adults in one to two years. In its native range, it is typically found at low densities and does not cause significant damage to trees native to the area. Outside its native range, it is an invasive species and is highly destructive to ash trees native to northwest Europe and North America. Prior to being found in North America, very little was known about emerald ash borer in its native range ; this has resulted in much of the research on its biology being focused in North America. Local governments in North America are attempting to control it by monitoring its spread, diversifying tree species, insecticides, and biological control. Contents 1 History 2 Identification 3 Life cycle 4 Range 5 Host plants 6 As an invasive species 6.1 Invasiveness and spread 6.2 Environmental and economic impacts 6.3 Monitoring 6.4 Management 6.4. 1 Quarantine and tree removal 6.4. 2 Insecticides 6.4. 3 Biological control 7 See also 8 References 9 External links History The French priest and naturalist Armand David collected a specimen of the species during one of the trips he took through imperial China in the 1860s and 1870s. He found the beetle in Beijing and sent it back to France, where the first brief description of Agrilus planipennis by the entomologist Léon Fairmaire was published in the Revue d'Entomologie in 1888. Unaware of Fairmaire 's description, a separate description naming the species as Agrilus marcopoli was published in 1930 by Jan Obenberger. Identification Adult beetles are typically bright metallic green and about 8.5 millimeters ( 0.33 in ) long and 1.6 millimeters ( 0.063 in ) wide. Elytra are typically a darker green, but can also have copper hues. Emerald ash borer is the only North American species of Agrilus with a bright red upper abdomen when viewed with the wings and elytra spread. The species also has a small spine found at the tip of the abdomen and serrate antennae that begin at the fourth antennal segment. Adults beetles of other species can often be misidentified by the public. Life cycle The emerald ash borer life cycle can occur over one or two years depending on the time of year of oviposition, the health of the tree, and temperature. After 400 -- 500 accumulated degree - days above 10 ° C ( 50 ° F ), adults begin to emerge from trees in late spring, and peak emergence occurs around 1000 degree - days. After emergence, adults feed for one week on ash leaves in the canopy before mating, but cause little defoliation in the process. Males hover around trees, locate females by visual cues, and drop directly onto the female to mate ; mating can last 50 minutes, and females may mate with multiple males over their lifespan. A typical female can live around six weeks and lay approximately 40 -- 70 eggs, but females that live longer can lay up to 200 eggs. Eggs are deposited between bark crevices, flakes, or cracks and hatch about two weeks later. Eggs are approximately 0.6 to 1.0 millimeter ( 0.02 to 0.04 in ) in diameter, and are initially white, but later turn reddish - brown if fertile. After hatching, larvae chew through the bark to the inner phloem, cambium, and outer xylem where they feed and develop. Emerald ash borer has four larval instars. By feeding, larvae create long serpentine galleries. Fully mature fourth - instar larvae are 26 to 32 millimeters ( 1.0 to 1.3 in ) long. In fall, mature fourth - instars excavate chambers about 1.25 centimeters ( 0.49 in ) into the sapwood or outer bark where they fold into a J - shape. These J - shaped larvae shorten into prepupae and develop into pupae and adults the following spring. To exit the tree, adults chew holes from their chamber through the bark, which leaves a characteristic D - shaped exit hole. Immature larvae can overwinter in their larval gallery, but can require an additional summer of feeding before overwintering again and emerging as adults the following spring. This two - year life cycle is more common in cool climates, such as European Russia. Larva Pupa removed from its pupal chamber. Adults exit the tree from D - shaped holes. Dorsal view of adult with elytra and wings spread. Underside of an adult emerald ash borer. Range Native range of emerald ash borer in eastern Asia and introduced range in European Russia as of 2013. The native range of the emerald ash borer is temperate northeastern Asia, which includes Russia, Mongolia, northern China, Japan, and Korea. The beetle is invasive in North America where it has a core population in Michigan and surrounding states and provinces. Populations are more scattered outside the core area, and the edges of its known distribution range north to the upper peninsula of Michigan, south to northern Louisiana, west to Colorado, and east to Massachusetts In northern Europe, a population was found in Moscow, Russia in 2003. From 2003 to 2016, this population has spread west towards Sweden at 40 km ( 25 mi ) per year and is expected to reach central Europe between 2031 and 2036. Host plants In its native range, emerald ash borer is only a nuisance pest on native trees, as population densities typically do not reach levels lethal to healthy trees. In China, it infests native F. chinensis, F. mandshurica, and F. rhynchophylla ; in Japan it also infests F. japonica and F. lanuginosa. Emerald ash borer primarily infest and can cause significant damage to ash species including green ash ( Fraxinus pennsylvanica ), black ash ( Fraxinus nigra ), white ash ( Fraxinus americana ), and blue ash ( Fraxinus quadrangulata ) in North America. In Europe, Fraxinus excelsior is the main ash species colonized by EAB. Ash susceptibility can vary due to the attractiveness of chemical volatiles to adults, or the ability of larvae to detoxify phenolic compounds. Emerald ash borer has also been found infesting white fringe tree in North America, which is a non-ash host, but it is unclear whether the trees were healthy when first infested, or were already in decline due to drought. Adults prefer to lay eggs on open grown or stressed ash, but readily lay eggs on healthy trees amongst other tree species. Young trees with bark between 1.5 millimeters ( 0.059 in ) to 5 millimeters ( 0.20 in ) are preferred. Both males and females use leaf volatiles and sesquiterpenes in the bark to locate hosts. Damage occurs in infested trees due to larval feeding. The serpentine feeding galleries of the larvae disrupt the flow of nutrients and water, effectively girdling ( killing ) the tree as it is no longer be able to transport sufficient water and nutrients to the leaves to survive. As an invasive species A green ash killed by emerald ash borers Outside its native range, emerald ash borer is an invasive species that is highly destructive to ash trees in its introduced range. Prior to emerald ash borer being found in North America, very little was known about emerald ash borer in its native range aside from a short description of life - history traits and taxonomic descriptions, which resulted in focused research on its biology in North America. Since its accidental introduction into the United States and Canada in the 1990s and its subsequent detection in 2002 in Canton, Michigan, it has since spread other parts of the North America. It is suspected that it was introduced from overseas in shipping materials such as packing crates. Invasiveness and spread Without factors that would normally suppress emerald ash borer populations in its native range ( e.g., resistant trees, predators, and parasitoid wasps ), populations can quickly rise to damaging levels. After initial infestation, all ash trees are expected to die in an area within 10 years without control measures. Every North American ash species has susceptibility to emerald ash borer, as North American species planted in China also have high mortality due to infestations, but some Chinese ash species are resistant. Green ash and black ash trees are preferred by emerald ash borer. White ash is also killed rapidly, but usually only after all green and black ash trees are eliminated. Blue ash displays some resistance to the emerald ash borer by forming callus tissue around emerald ash borer galleries, but is eventually killed. Many of the specialized predators and parasitoids that suppressed emerald ash borer in Asia were not present in North America. Predators and parasitoids native to North America do not sufficiently suppress emerald ash borer, so populations continue to grow. Emerald ash borer populations can spread between 2.5 to 80 km ( 1.6 to 49.7 mi ) a year. It primarily spreads through flight or by transportation of ash bark containing products such as firewood or nursery stock, which allows it to reach new areas and create satellite populations outside of the main infestation. Other factors can limit spread. Winter temperatures of approximately − 38 ° C ( − 36 ° F ) limit range expansion., and overwintering emerald ash borer survive down to average temperatures of − 30 ° C ( − 22 ° F ) due to antifreeze chemicals in the body and insulation provided by tree bark. Larvae can also survive high heat up to 53 ° C ( 127 ° F ). North American predators and parasitoids can occasionally cause high emerald ash borer mortality, but generally offer only limited control. Mortality due to native woodpeckers is variable. Parasitism by parasitoids such as Atanycolus cappaerti can be high, but overall such control is generally low. Environmental and economic impacts Emerald ash borer threatens the entire North American Fraxinus genus. It has killed at least tens of millions of ash trees so far and threatens to kill most of the 8.7 billion ash trees throughout North America. Emerald ash borer kills young trees several years before reaching their seeding age of 10 years. In both North America and Europe, the loss of ash from an ecosystem can result in increased numbers of invasive plants, changes in soil nutrients, and effects on species that feed on ash. Damage and efforts to control the spread of emerald ash borer have affected businesses that sell ash trees or wood products, property owners, and local or state governments. Quarantines can limit the transport of ash trees and products, but economic impacts are especially high for urban and residential areas due to treatment or removal costs and decreased land value from dying trees. Costs for managing these trees can fall upon homeowners or local municipalities. For municipalities, removing large numbers of dead or infested trees at once is costly, so slowing down the rate at which trees die through removing known infested trees and treating trees with insecticides can allow local governments more time to plan, remove, and replace trees that would eventually die. This strategy saves money as it would cost $10.7 billion in urban areas of 25 states between 2009 -- 2019, while removing and replacing all ash trees in these same areas at once would cost $25 billion. Some urban areas such as Minneapolis, Minnesota, have large amounts of ash with slightly more than 20 % of their urban forest as ash. Monitoring In areas where emerald ash borer has not yet been detected, surveys are used to monitor for new infestations. Visual surveys are used to find ash trees displaying emerald ash borer damage, and traps with colors attractive to emerald ash borer, such as purple or green, are hung in trees as part of a monitoring program. These traps can also have volatile pheromones applied to them that attract primarily males. A purple trap used for determining the extent of the invasion Sometimes trees are also girdled to act as trap trees to monitor for emerald ash borer. The stressed tree attracts egg - laying females in the spring and trees can be debarked in the fall to search for larvae. If detected, an area is often placed under a quarantine to prevent infested wood material from causing new infestations. Further control measures are then taken within the area to slow population growth by reducing beetle numbers, preventing them from reaching reproductive maturity and dispersing, and reducing the abundance of ash trees. Government agencies in both the USA and Canada have utilized a native species of parasitoid wasp, Cerceris fumipennis, as a means of detecting areas to which emerald ash borer has spread. The females of these wasps hunt other jewel beetles and emerald ash borer if it is present. The wasps stun the beetles and carry them back to their burrows in the ground where they are stored until the wasps ' eggs hatch and the wasp larvae feed on the beetles. Volunteers catch the wasps as they return to their burrows carrying the beetles to determine whether emerald ash borer is present. This methodology is known as biological surveillance, as opposed to biological control, because it does not appear that the wasps have a significant negative impact on emerald ash borer populations. Management In areas where emerald ash borer is non-native and invasive, quarantines, infested tree removal, insecticides, and biological control are used to reduce damage to ash trees. North American emerald ash borer finds and quarantine locations as of January 3, 2017. Quarantine and tree removal Once an infestation is detected, quarantines are typically imposed by state or national government agencies disallowing transport of ash firewood or live plants outside of these areas without permits indicating the material has been inspected or treated ( i.e., heat treatment or wood chipping ) to ensure no live emerald ash borer are present in the bark and phloem. In urban areas, trees are often removed once an infestation is found to reduce emerald ash borer population densities and the likelihood of further spread. Urban ash are typically replaced with non-ash species such as maple, oak, or linden to limit food sources. In rural areas, trees can be harvested for lumber or firewood to reduce ash stand density, but quarantines may apply for this material, especially in areas where the material could be infested. Kentucky Extension specialists suggest selecting uncommon species to replace removed ashes in the landscape. Previous generations created monoculture s by planting ash trees in an overabundance, a factor in the extent of the devastation caused by the emerald ash borer. Favoring instead a diversity in species helps keep urban forests healthy. University of Kentuck y scientists suggest choosing monotypic species such as the pawpaw, yellowwood, Franklin tree, Kentucky coffeetree, Osage orange, sourwood, and baldcypress. Insecticides Insecticides with active ingredients such as azadirachtin, imidacloprid, emamectin benzoate, and dinotefuran are currently used since they are systemic ( i.e., incorporated into the tree ) and remain effective for one to three years depending on the product. Insecticides are typically only considered a viable option in urban areas with high value trees near an infestation. Ash trees are primarily treated by direct injection into the tree or soil drench. Some insecticides can not be applied by homeowners and must be applied by licensed applicators. Initially, tree injections do not compromise tree health, but over many years drilling and chemical wounds can compromise the tree 's health. Damage from emerald ash borer can continue to increase over time even with insecticide applications. Insecticide treatments are not feasible for large forested areas outside of urban areas. Biological control Tetrastichus planipennisi, a parasitoid wasp used as a biological control agent The native range of emerald ash borer in Asia was surveyed for parasitoid species that parasitize emerald ash borer and do not attack other insect species in the hope they would suppress populations when released in North America. Three species imported from China were approved for release by the USDA in 2007 and in Canada in 2013 : Spathius agrili, Tetrastichus planipennisi, and Oobius agrili, while Spathius galinae was approved for release in 2015. Excluding Spathius galinae, which has only recently been released, the other three species have been documented parasitizing emerald ash borer larvae one year after release, indicating that they survived the winter, but establishment varied among species and locations. Tetrastichus planipennisi and Oobius agrili established and have had increasing populations in Michigan since 2008 ; Spathius agrili has had lower establishment success in North America, which could be due to a lack of available emerald ash borer larvae at the time of adult emergence in spring, limited cold tolerance, and better suitability to regions of North America below the 40th parallel. The USDA is also assessing the application of Beauveria bassiana, an insect fungal pathogen, for controlling emerald ash borer in conjunction with parasitoid wasps. See also Insects portal Forest integrated pest management Forest pathology Invasive species References Jump up ^ `` Data Sheets on Quarantine Pests : Agrilus planipennis '' ( PDF ). OEPP / EPPO Bulletin. European and Mediterranean Plant Protection Organization. 35 ( 3 ) : 436 -- 438. 2005. doi : 10.1111 / j. 1365 - 2338.2005. 00844. x. ^ Jump up to : Miller, Matthew. `` Battle of the Ash Borer : Decades after Beetles Arrived in Michigan, Researchers Looking to Slow Devastation ''. Lansing State Journal. Jump up ^ Parsons, Gary L. ( November 2008 ). `` Emerald ash borer : A guide to identification and comparison to similar species '' ( PDF ). USDA. Retrieved August 15, 2014. Jump up ^ `` Native Borers and Emerald Ash Borer Look - alikes '' ( PDF ). Michigan State University Extension. Retrieved 12 March 2017. ^ Jump up to : Gould, Juli S. ; Bauer, Leah S. ; Lelito, Jonathan ; Duan, Jian ( May 2013 ). `` Emerald Ash Borer Biological Control Release and Recovery Guidelines '' ( PDF ). USDA - APHIS - ARS - FS. ^ Jump up to : Herms, Daniel A. ; McCullough, Deborah G. ( October 2013 ). `` Emerald Ash Borer Invasion of North America : History, Biology, Ecology, Impacts, and Management '' ( PDF ). Annual Review of Entomology. 59 : 13 -- 30. doi : 10.1146 / annurev - ento - 011613 - 162051. PMID 24112110. ^ Jump up to : Poland, Therese. M ; Chen, Tigen ; Jennifer, Koch ; Pureswaran, Deepa ( December 2014 ). `` Review of the emerald ash borer ( Coleoptera : Buprestidae ), life history, mating behaviours, host plant selection, and host resistance '' ( PDF ). The Canadian Entomologist. 147 : 252 -- 262. doi : 10.4039 / tce. 2015.4. ^ Jump up to : Valenta, V. ; et al. ( 2016 ). `` A new forest pest in Europe : a review of Emerald ash borer ( Agrilus planipennis ) invasion ''. Journal of Applied Entomology. doi : 10.1111 / jen. 12369. Jump up ^ `` Agrilus planipennis ( insect ) ''. Global Invasive Species Database. ISSG - IUCN. August 14, 2006. ^ Jump up to : `` Emerald ash borer ''. USDA Forest Service. Retrieved July 5, 2015. Jump up ^ Peter A. Thomas ( 2016 ). `` Biological Flora of the British Isles : Fraxinus excelsior ''. Journal of Ecology. 104 : 1158 -- 1209. doi : 10.1111 / 1365 - 2745.12566. Jump up ^ `` Ash tree set for extinction in Europe ''. BBC. 23 March 2016. Retrieved 23 March 2016. Jump up ^ Wang, Xiao - Yi ; et al. ( 2010 ). `` The biology and ecology of the emerald ash borer, Agrilus planipennis, in China ''. Journal of Insect Science. 10 : 128. Jump up ^ Poland, T. ; McCullough, D. ( 2006 ). `` Emerald ash borer : invasion of the urban forest and the threat to North America 's ash resource '' ( PDF ). Journal of Forestry. 104 : 118 -- 124. Jump up ^ `` Emerald Ash Borer attacking White Fringe Tree ''. Retrieved 14 December 2014. Jump up ^ `` Agrilus planipennis ( insect ) ''. Global Invasive Species Database. ISSG - IUCN. August 14, 2006. Retrieved August 28, 2013. ^ Jump up to : `` Initial County EAB detections in North America '' ( PDF ). USDA. Retrieved 28 January 2017. Jump up ^ Cappaert, D. ; et al. ( Fall 2005 ). `` Emerald ash borer in North America : a research and regulatory challenge ''. American Entomologist. 51 : 152 -- 163. doi : 10.1093 / ae / 51.3. 152. Jump up ^ Lui, Houping ; et al. ( 2003 ). `` Exploratory survey for the emerald ash borer, Agrilus planipennis ( Coleoptera : Buprestidae ), and its natural enemies in China '' ( PDF ). Great Lakes Entomologist. 36 : 191 -- 204. Retrieved 28 May 2014. Jump up ^ Rebek, E.J. ; Herms, D.A. ; Smitley, D.R. ; et al. ( 2013 ). `` Interspecific Variation in Resistance to Emerald Ash Borer ( Coleoptera : Buprestidae ) Among North American and Asian Ash ( Fraxinus spp. ) '' ( PDF ). Environmental Entomology. 37 ( 1 ) : 242 -- 246. doi : 10.1603 / 0046 - 225X ( 2008 ) 37 ( 242 : IVIRTE ) 2.0.CO ; 2. PMID 18348816. Jump up ^ Anulewicz, Andrea C. ; McCullough, Deborah G. ; Cappaert, David L. ( September 2007 ). `` Emerald Ash Borer ( Agrilus planipennis ) Density and Canopy Dieback in Three North American Ash Species ''. Aboriculture & Urban Forestry. International Society of Arboriculture. 33 ( 5 ) : 338 -- 349. doi : 10.1007 / s10530 - 013 - 0543 - 7. Jump up ^ DeSantis, Ryan D. ; et al. ( April 21, 2013 ). `` Effects of climate on emerald ash borer mortality and the potential for ash survival in North America ''. Agricultural and Forest Meteorology. 178 : 120. Jump up ^ `` The Upside Of The Bitter Cold : It Kills Bugs That Kill Trees ''. National Public Radio. Retrieved May 21, 2014. ^ Jump up to : McCullough, D.G. ; et al. ( 2012 ). `` Evaluation of potential strategies to SLow Ash Mortality ( SLAM ) caused by emerald ash borer ( Agrilus planipennis ) : SLAM in an urban forest '' ( PDF ). International Journal of Pest Management. 58 : 9 -- 23. doi : 10.1080 / 09670874.2011. 637138. Jump up ^ Kovacs, K.F. ; et al. ( September 2009 ). `` Cost of potential emerald ash borer damage in U.S. communities, 2009 - 2019 '' ( PDF ). Ecological Economics. 69 ( 3 ) : 569 -- 578. doi : 10.1016 / j. ecolecon. 2009.09. 004. Jump up ^ `` Emerald Ash Borer ( EAB ) is in Minneapolis ''. Minneapolis Park and Recreation Board. Retrieved August 29, 2013. Jump up ^ Careless, Philip ; Marshall, Stephen. A. ; Gill, Bruce D. ; et al. ( February 2014 ). `` The use of Cerceris fumipennis ( Hymenoptera : Crabronidae ) for surveying and monitoring emerald ash borer ( Coleoptera : Buprestidae ) infestations in eastern North America ''. Canadian Entomologist. 146 : 90 -- 105. doi : 10.4039 / tce. 2013.53. Jump up ^ `` Moving Firewood ''. USDA. Retrieved 28 January 2017. Jump up ^ `` Ash replacement information ''. USDA Forest Service. Retrieved July 15, 2014. Jump up ^ `` SLAM : SLow Ash Mortality ''. Jump up ^ `` After Your Ash Has Died : Making an Informed Decision on What to Replant '' ( PDF ). extension.ca.uky.edu. ^ Jump up to : Herms, Daniel A. ; McCullough, Deborah G. ; Smitley, David R. ; Sadof, Clifford S. ; Williamson, R. Chris ; Nixon, Phillip L. ( June 2009 ), `` Insecticide Options for Protecting Ash Trees from Emerald Ash Borer '' ( PDF ), North Central IPM Center Bulletin, North Central IPM Center : 12, retrieved August 30, 2013 Jump up ^ Hahn, Jeffrey ; Herms, Daniel A. ; McCullough, Deborah G. ( February 2011 ), Frequently Asked Questions Regarding Potential Side Effects of Systemic Insecticides Used to Control Emerald Ash Borer ( PDF ), www.emeraldashborer.info, retrieved August 30, 2013 Jump up ^ Doccola, Joseph J. ; Smitley, David R. ; Davis, Terrance W. ; Aiken, John J. ; Wild, Peter M. ( January 2011 ). `` Tree Wound Responses Following Systemic Insecticide Trunk Injection Treatments in Green Ash ( Fraxinus pennsylvanica Marsh. ) as Determined by Destructive Autopsy ''. Aboriculture & Urban Forestry. International Society of Arboriculture. 37 ( 1 ) : 6 -- 12. Jump up ^ Bauer, L.S. ; Liu, H-P ; Miller, D. ; Gould, J. ( 2008 ). `` Developing a classical biological control program for Agrilus planipennis ( Coleoptera : Buprestidae ), an invasive ash pest in North America '' ( PDF ). Newsletter of the Michigan Entomological Society. 53 ( 3&4 ) : 38 -- 39. Jump up ^ `` Biological Control of the Emerald Ash Borer ''. United States Department of Agriculture Forest Service. ^ Jump up to : Bauer, Leah S. ; Duan, Jian J. ; Gould, Juli R. ; van Driesche, Roy ; et al. ( March 8, 2015 ). `` Progress in the classical biological control of Agrilus planipennis Fairmaire ( Coleoptera : Bupresitdae ) in North America ''. The Canadian Entomologist. 147 : 300 -- 317. doi : 10.4039 / tce. 2015.18. Jump up ^ `` Biocontrol : Fungus and Wasps Released to Control Emerald Ash Borer ''. Science News. Science Daily. May 2, 2011. Retrieved August 30, 2013. External links Wikimedia Commons has media related to Emerald ash borer. Wikispecies has information related to Agrilus planipennis Interview with researcher Canadian Food Inspection Agency USDA Forest Service Northern Research Station link to research on EAB Ohio Department of Agriculture infestation PDF map Species Profile - Emerald Ash Borer ( Agrilus planipennis ), National Invasive Species Information Center, United States National Agricultural Library. Lists general information and resources for Emerald Ash Borer. The short film Emerald Ash Borer : The Green Menace is available for free download at the Internet Archive Retrieved from `` https://en.wikipedia.org/w/index.php?title=Emerald_ash_borer&oldid=818482142 '' Categories : Invasive insect species Woodboring beetles Insect pests of temperate forests Buprestidae Forestry in the United States Beetles described in 1888 Beetles of Asia Insects of Russia Invasive animal species in North America Invasive animal species in Europe Hidden categories : Good articles Articles with ' species ' microformats Commons category with local link different than on Wikidata Talk Contents About Wikipedia Wikispecies Cebuano Deutsch Français Nederlands Norsk Norsk nynorsk Português Русский Simple English Svenska Winaray Edit links This page was last edited on 3 January 2018, at 20 : 49. Text is available under the Creative Commons Attribution - ShareAlike License ; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. 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Question: where is the emerald ash borer found in the us
Answer: range north to the upper peninsula of Michigan, south to northern Louisiana, west to Colorado, and east to Massachusetts; Michigan and surrounding states and provinces; north to the upper peninsula of Michigan, south to northern Louisiana, west to Colorado, and east to Massachusetts; north to the upper peninsula of Michigan, south to northern Louisiana, west to Colorado, and east to Massachusetts