Quarantine-pest
Guides
Anastrepha ludens
Mexican fruit fly, Mexfly
Anastrepha ludens, the Mexican fruit fly or Mexfly, is a major agricultural pest native to Mexico and Central America. It is one of the most economically damaging fruit flies, particularly threatening citrus and mango production. The species is notable among Anastrepha species for its subtropical distribution, allowing it to range further north than most congeners. It has been repeatedly introduced to the United States, where it is subject to intensive eradication efforts using sterile insect technique and biological control. The USDA estimates it causes $1.44 billion in damage over five-year periods.
Anisandrus maiche
Anisandrus maiche is an invasive ambrosia beetle native to East Asia that has established populations in North America and Europe. It is a significant pest of stressed trees in orchards, forests, and ornamental settings, boring into wood and cultivating symbiotic fungi in galleries. The species has been recorded in the United States since 2005, in Italy and Switzerland since 2021-2022, and was previously detected in Ukraine and European Russia. Its spread is facilitated by international transport of wood products and an inbreeding mating system that allows single females to establish new populations.
Anoplophora
longhorn beetles, long-horned beetles
Anoplophora is a genus of longhorn beetles (Cerambycidae) native to Asia, containing over 50 species. Most species are large, colorful beetles with distinctive markings that have made them popular among collectors and subjects of artwork. The genus includes several economically significant pests, most notably the Asian longhorned beetle (A. glabripennis) and the citrus longhorned beetle (A. chinensis), which have been introduced to North America and Europe where they threaten urban, ornamental, and forest trees.
Anoplophora glabripennis
Asian longhorned beetle, starry sky beetle, sky beetle, ALB
Anoplophora glabripennis, commonly known as the Asian longhorned beetle or starry sky beetle, is a highly polyphagous wood-boring beetle native to eastern China, Japan, and Korea. It has become a devastating invasive pest in North America and Europe, where it attacks and kills a broad range of hardwood trees. The beetle was first detected in the United States in Brooklyn, New York in 1996, likely arriving via solid wood packaging material. Eradication efforts have focused on tree removal and destruction, though biocontrol methods including entomopathogenic fungi and nematodes have been studied as potential management tools.
Arhopalus
burnt pine longhorn beetle (A. ferus), black pine sawyer (A. rusticus)
Arhopalus is a genus of longhorn beetles (Cerambycidae: Spondylidinae: Asemini) distributed across the Northern Hemisphere, with several species introduced to the Southern Hemisphere as invasive pests of conifers. The genus comprises approximately 20 described species, with A. rusticus and A. ferus being the most extensively studied due to their economic importance. Species develop in dead or fire-damaged conifer wood, with some exhibiting strong attraction to burnt pine volatiles. Several species produce male-emitted aggregation-sex pheromones containing fuscumol and geranylacetone. Invasive populations in New Zealand, Australia, South America, and South Africa require monitoring at ports and sawmills for timber export compliance.
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te-statemethodological-state-stateepistemological-state-stateontological-state-stateaxiological-state-statepraxeological-state-statelogical-state-staterational-state-statereasonable-state-statesensible-state-statepragmatic-state-statepractical-state-statetheoretical-state-stateconceptual-state-stateempirical-state-stateexperimental-state-stateobservational-state-stateexperiential-state-statephenomenological-state-statehermeneutical-state-statecritical-state-statereflexive-state-statereflective-state-staterepresentative-state-stateAtherigona
Shoot Flies
Atherigona is a genus of muscid flies containing approximately 299 recognized species. Many species are economically significant agricultural pests, particularly in cereal cultivation. Larvae of numerous species are known as shoot flies, attacking the seedlings and stems of rice, maize, sorghum, wheat, and various millets. The genus has a broad geographic distribution spanning Africa, Asia, Europe, and Australasia, with species diversity concentrated in tropical and subtropical grassland habitats.
Bactericera
psyllid bugs, jumping plant lice
Bactericera is a genus of psyllid bugs (family Triozidae) established by Auguste Puton in 1876. The genus is predominantly distributed in the Palaearctic and Nearctic regions, with 24 recognized species in North America north of Mexico. Members are small phloem-feeding insects commonly known as "jumping plant lice." The genus includes economically significant agricultural pests, most notably Bactericera cockerelli (potato/tomato psyllid), which transmits the bacterial pathogen 'Candidatus Liberibacter solanacearum' causing zebra chip disease in potatoes.
Bactericera cockerelli
potato psyllid, tomato psyllid, tomato/potato psyllid
Bactericera cockerelli, commonly known as the potato psyllid or tomato psyllid, is a phloem-feeding insect native to southern North America. It is a major agricultural pest of solanaceous crops, particularly potatoes and tomatoes, causing direct feeding damage and transmitting the bacterium Candidatus Liberibacter solanacearum, which causes zebra chip disease in potatoes and psyllid yellows in other hosts. The species has expanded its range northward and has been introduced to New Zealand, where it causes significant economic damage to protected and outdoor crops.
Bactrocera
fruit flies
Bactrocera is a large genus of tephritid fruit flies comprising approximately 500 described species. The genus name derives from Ancient Greek 'bakter' (rod) and 'kera' (horn). Many species are economically significant agricultural pests that infest fruits and vegetables. The genus underwent major taxonomic revision in 2015 when Zeugodacus was split from Bactrocera based on DNA evidence.
Blissus leucopterus
true chinch bug, chinch bug
Blissus leucopterus, commonly known as the true chinch bug, is a small hemipteran native to North America and the most frequently encountered species in the genus Blissus. Adults measure approximately 4 mm in length with distinctive black bodies, white wings bearing black triangular spots, and reddish legs. The species is a significant agricultural pest of turfgrass and grain crops, particularly corn, wheat, and sorghum, causing damage by sucking sap from stems and leaves. Populations thrive under hot, dry, sunny conditions, while heavy rainfall and high humidity promote fungal pathogens that suppress infestations.
Blissus leucopterus hirtus
Hairy Chinch Bug
Blissus leucopterus hirtus is a subspecies of chinch bug recognized as a significant pest of grain crops, particularly wheat. It is distinguished from the nominate subspecies B. l. leucopterus by morphological features including denser body hair. The taxon is included in quarantine pest lists due to its potential for economic damage and invasive spread. Mathematical modeling indicates high probability of acclimatization in southern and central regions of Russia.
Caliothrips
bean thrips, banded thrips
Caliothrips is a genus of thrips in the family Thripidae, subfamily Panchaetothripinae, established by Daniel in 1904. Species in this genus are phytophagous, typically associated with plant leaves, and several are recognized as agricultural pests. The genus includes notable species such as C. phaseoli (bean thrips) and C. fasciatus (North American bean thrips), which feed on legumes and other crops. Adults are characterized by distinct wing banding patterns and small size (~1 mm). Some species have been intercepted in international trade, particularly in navel oranges, triggering quarantine concerns.
Carposina fernaldana ottawana
Carposina fernaldana ottawana is a subspecies of moth in the family Carposinidae. The species Carposina fernaldana is known to occur in Asia and has been intercepted at North American ports of entry on imported goods. This subspecies designation indicates geographic variation within the species. The species is associated with Rosaceae hosts, particularly apple.
Ceratitis
Mediterranean fruit flies
Ceratitis is a genus of tephritid fruit flies comprising approximately 80 species, with Ceratitis capitata (Mediterranean fruit fly) being the most economically significant and widely studied. The genus is organized into six subgenera: Acropteromma, Ceratalaspis, Ceratitis, Hoplolophomyia, Pardalaspis, and Pterandrus. Multiple Ceratitis species are major agricultural pests, particularly in Africa, the Mediterranean region, and areas where they have been introduced. The genus has been extensively studied for sterile insect technique applications, with C. capitata serving as a model organism for biological control research.
Ceratitis capitata
Mediterranean fruit fly, medfly
Ceratitis capitata, the Mediterranean fruit fly or medfly, is a highly destructive agricultural pest native to sub-Saharan Africa. It has established populations across tropical and subtropical regions worldwide, with frequent incursions into temperate areas including California, Florida, and Texas. The species is considered one of the most economically important fruit flies due to its exceptionally broad host range—over 200 fruit and vegetable species—and its ability to tolerate cooler climates better than most tropical fruit fly species. Adults are small yellow-brown flies with distinctive black thoracic markings.
Cnestus
ambrosia beetles
Cnestus is a genus of ambrosia beetles (Curculionidae: Scolytinae: Xyleborini) established by Sampson in 1911. Species in this genus are characterized by inbreeding reproduction through sib mating, cultivation of symbiotic ambrosia fungi as their sole nutritional source, and haplodiploid sex determination. The genus includes both native Asian species and invasive populations that have established in North America, Europe, and other regions. Cnestus mutilatus (camphor shot borer) is the most widely documented species, first reported in the United States in 1999 and subsequently detected in Europe. The genus exhibits complex evolutionary patterns, with some species containing cryptic sympatric lineages that are morphologically indistinguishable but genetically distinct.
Cymus guatemalanus
Cymus guatemalanus is a seed bug in the family Cymidae, originally described from Guatemala in 1893. The species has been documented in Middle America and Mexico, with a 2012 interception in Philadelphia representing its first recorded occurrence in the United States. It was found in a shipment of cassava and chayotes from Costa Rica. The species has been referred to under the synonym Dalmochrimnus guatemalanus in some agricultural inspection contexts.
Diaspidiotus
Diaspidiotus is a genus of armored scale insects (family Diaspididae) comprising over 80-90 described species with worldwide distribution. Species in this genus are phloem-feeding pests of deciduous trees and fruit crops, including economically important species such as the San José scale (D. perniciosus) and oystershell scale (D. ostreaeformis). These scales secrete a protective waxy covering (test) over their bodies and are frequently intercepted in agricultural quarantine due to their similarity to critical quarantine pests.
Euwallacea fornicatus
tea shot-hole borer, polyphagous shot-hole borer, PSHB
Euwallacea fornicatus is an invasive ambrosia beetle (Coleoptera: Curculionidae: Scolytinae) native to Asia that has established populations in North America, Israel, South Africa, Australia, and South America. It is now recognized as part of a cryptic species complex containing at least four distinct species (E. fornicatus, E. fornicatior, E. whitfordiodendrus, and E. kuroshio) that are morphologically indistinguishable but genetically distinct. The species is a significant economic pest of tea, avocado, citrus, and numerous ornamental and native trees, acting as a vector for Fusarium fungi that cause Fusarium dieback disease.
Euwallacea similis
ambrosia beetle
Euwallacea similis is a small ambrosia beetle (2.2–2.7 mm) native to South and Southeast Asia and Australia, now globally distributed through human trade in timber and wood commodities. It colonizes stressed, cut, or recently dead host trees rather than healthy living trees, distinguishing it from related invasive species like E. fornicatus. The species exhibits haplodiploid sex determination and inbreeding polygyny, with females farming symbiotic Fusarium fungi in wood galleries. First recorded in the Iberian Peninsula in 2025, it is considered a high-risk quarantine pest due to its polyphagous habits and potential to vector pathogenic fungi.
ambrosia-beetleinvasive-specieshaplodiploidfungal-symbiosisforest-pestxyleboriniquarantine-pestwood-boring-beetleglobal-trade-vectorcryptic-species-complexsecondary-borercrepuscularlight-attractedfusarium-symbiontparthenogenesisinbreeding-polygynygenome-sequencedchromosome-fissioniberian-peninsula-introduction2025-range-expansionFerrisia
mealybugs
Ferrisia is a genus of mealybugs (Hemiptera: Pseudococcidae) established by David T. Fullaway in 1923 with F. virgata as the type species. The genus underwent taxonomic revision in 2012, resulting in recognition of 18 species including eight newly described species, and the transfer of F. floridana to the new genus Pseudoferrisia. Species of Ferrisia are characterized by distinctive morphological features including enlarged dorsal tubular ducts with associated discoidal pores, and ventral oral-collar tubular ducts of varying sizes. The genus is native to the Americas but includes species now found worldwide, with F. virgata being a particularly widespread and economically significant pest.
Ferrisia virgata
striped mealybug, grey mealybug
Ferrisia virgata, commonly known as the striped mealybug, is a highly polyphagous pest species in the family Pseudococcidae. First described from Jamaica in 1893, it spread globally within approximately a decade and is now established in all tropical and subtropical zoogeographic regions. The species is recognized by two dark dorsal longitudinal stripes and is a significant agricultural pest with a host range spanning over 203 genera in 77 plant families. It vectors plant badnavirus diseases affecting cocoa and black pepper, and has been demonstrated to acquire but not effectively transmit 'Candidatus Liberibacter asiaticus', the bacterium associated with citrus huanglongbing.
Heilipus
pine weevils
Heilipus is a genus of New World weevils in the family Curculionidae, containing over 280 described species distributed from the southern United States to northern Argentina. The genus is characterized by two primary feeding guilds: seed borers that develop within fruits of Lauraceae, and trunk borers that tunnel into stems of host trees. Several species are significant agricultural pests, particularly of avocado (Persea americana) and other commercial crops. The Brazilian Atlantic Forest has been proposed as a possible center of origin for the genus based on high diversity of both weevils and host plants.
Heliothrips
Heliothrips is a genus of thrips in the family Thripidae comprising approximately 18 described species. The genus includes economically significant pests, most notably Heliothrips haemorrhoidalis (greenhouse thrips), which infests a wide range of cultivated plants. Members of this genus are characterized by their fringed wings and rasping-sucking mouthparts. Several species have been documented as polyphagous herbivores with broad host ranges spanning multiple plant families.
thripsThripidaepestagriculturehorticulturegreenhouse-thripspolyphagousHeliothrips-haemorrhoidalisbiological-control-targetquarantine-pestkiwifruit-peststrawberry-pestavocado-pestornamental-pestworldwide-distributionfringed-wingsThysanopteraPanchaetothripinaeHaliday-183618-speciesgeneralist-herbivorerasping-sucking-mouthpartsLycorma delicatula
Spotted Lanternfly
Lycorma delicatula, commonly known as the spotted lanternfly, is a planthopper native to China and Southeast Asia that has become a globally significant invasive pest. First detected in the United States in Berks County, Pennsylvania in 2014, it has since spread to over 20 states and the District of Columbia, primarily through human-assisted transport of egg masses. The species feeds on phloem sap from more than 100 plant species, with a strong preference for Tree of Heaven (Ailanthus altissima), and causes severe economic damage to vineyards, orchards, and hardwood industries through direct feeding and secondary effects of honeydew secretion.
Matsucoccus
Matsucoccus is a genus of scale insects in the family Matsucoccidae, specialized feeders on conifers of the genus Pinus. Species within this genus exhibit pronounced sexual dimorphism: females are sessile, often concealed under waxy coverings, while males develop wings as adults and are active fliers. Several species are significant forest pests, capable of causing needle yellowing, premature needle drop, shoot desiccation, and tree mortality in heavy infestations. The genus has been subject to taxonomic revision, with some species historically placed in Margarodidae and ongoing uncertainty regarding species boundaries.
Monochamus carolinensis
Carolina Pine Sawyer
Monochamus carolinensis is a longhorn beetle in the subfamily Lamiinae, commonly known as the Carolina Pine Sawyer. It is a significant vector of the pinewood nematode Bursaphelenchus xylophilus, the causative agent of pine wilt disease. The species is native to North America, occurring in Canada and the United States, and has been detected in China. Adults are attracted to blacklights and are associated with pine forests.
Naupactus
White-fringed Weevils
Naupactus is a large genus of weevils in the family Curculionidae, commonly known as white-fringed weevils. The genus comprises exclusively Neotropical species, several of which have been introduced to other regions and become significant agricultural pests. Members of this genus are characterized by reduced humeri and lack of metathoracic wings, traits formerly used to separate them into the genus Graphognathus before taxonomic revision. Some species exhibit parthenogenetic reproduction, and flightless adults are common.
Neohydatothrips samayunkur
marigold thrips, French marigold thrips
Neohydatothrips samayunkur is a thrips species in the family Thripidae, commonly known as the marigold thrips. It is an economically significant pest of Tagetes species (marigolds), feeding on flowers and leaves. The species has a broad intercontinental distribution spanning Africa, Australia, Europe, Northern Asia, Central America, and North America. Originally described by Kudo in 1995 and validated by Nakahara in 1999, it has been intercepted at U.S. quarantine ports and represents a new country record for Egypt.
Phthorimaea
Phthorimaea is a genus of small moths in the family Gelechiidae, established by Edward Meyrick in 1902. The genus contains approximately 15 described species distributed across the Americas and other regions. Several species are economically significant agricultural pests, particularly Phthorimaea operculella (potato tuber moth) and Phthorimaea absoluta (South American leafminer/tomato leafminer), which infest Solanaceae crops worldwide. The genus is characterized by its association with nightshade family plants and has been the subject of intensive research due to the invasive potential and management challenges posed by its pest species.
Rhagoletis pomonella
Apple Maggot, Apple Maggot Fly, Railroad Worm
Rhagoletis pomonella is a tephritid fruit fly native to North America that has undergone a major host shift from native hawthorn to cultivated apple within the last 150 years, making it a primary pest of apple production in the northeastern United States and southeastern Canada. The species exhibits host race formation, with genetically distinct populations specializing on apple versus hawthorn that show differences in seasonal timing, neurochemistry, and adult eclosion patterns. It has been introduced to the western United States and is subject to intensive monitoring and quarantine efforts due to its economic impact on fruit exports.
Russellaspis pustulans
oleander pit scale, fig pit scale, Akee Fringed Scale
Russellaspis pustulans, commonly known as the oleander pit scale or fig pit scale, is a parthenogenetic scale insect in the family Asterolecaniidae. It is highly polyphagous, feeding on plants across 69 families with documented preference for fig (Ficus carica) and oleander (Nerium oleander). The species is widely distributed in tropical and subtropical regions worldwide, completing 2-3 generations annually depending on environmental conditions. It is recognized as a pest of economic importance on fruit trees and ornamental plants, with feeding activity inducing characteristic pitting and galling on host tissues.
Tephritidae
fruit flies, peacock flies
Tephritidae is a family of true fruit flies comprising nearly 5,000 described species across approximately 500 genera. Members are distinguished from Drosophilidae (also called fruit flies) by their larger size, patterned wings, and phytophagous larval biology. The family exhibits extraordinary morphological diversity, including elaborate wing markings that inspired the common name "peacock flies." Many species are economically significant agricultural pests, while others serve as biological control agents for invasive weeds. Taxonomy remains dynamic due to ongoing genetic and morphological revisions.
Trichoferus
Trichoferus is a genus of long-horned beetles (Cerambycidae) established by Wollaston in 1854, containing at least 20 described species. Several species have become economically significant as invasive wood-boring pests, with Trichoferus campestris (velvet longhorned beetle) being particularly well-documented for its worldwide expansion through international trade. The genus includes both native and introduced species with documented associations with living trees, cut wood, and wood packaging material.
Trioza
psyllids, jumping plant-lice
Trioza is the type genus of psyllids in the family Triozidae, comprising sap-sucking insects with worldwide distribution. Species in this genus exhibit diverse host associations, ranging from agricultural crops to native trees. Several species are economically significant: Trioza erytreae transmits citrus greening disease (Huanglongbing), T. apicalis is a major pest of carrot in northern Europe, and T. brevigenae is an invasive pest of ornamental Ficus in California. The genus is characterized by distinct morphological features and complex life cycles involving seasonal migration between summer hosts and overwintering sites.