Pest
Guides
Fenusa
Fenusa is a genus of common sawflies in the family Tenthredinidae containing approximately 11 described species. Species in this genus are specialized leaf miners whose larvae feed internally within leaves of host trees. Several species are significant economic pests, including the birch leafminer (F. pusilla), elm leafminer (F. ulmi), and European alder leafminer (F. dohrnii). The genus has been extensively studied in biological control contexts due to the damage caused by larval feeding.
Fenusa pumila
birch leafminer, Birch Leafminer Sawfly
Fenusa pumila is a sawfly species in the family Tenthredinidae, commonly known as the birch leafminer. Native to Europe, it has been introduced to North America where it has become established. The species is a specialist leaf-mining herbivore on birch trees, with larvae feeding internally within leaf tissue. In North America, populations may complete two to four generations annually, with adult emergence triggered by accumulated growing degree-days.
Fenusa ulmi
elm leafminer
Fenusa ulmi is a sawfly in the family Tenthredinidae whose larvae mine leaves of elm trees (Ulmus spp.). Native to Europe, it has been introduced to North America where it functions as a pest of ornamental and nursery elms. The species shows strong host specificity, with European elm taxa being most susceptible to damage. Adult emergence and oviposition are tightly synchronized with host leafing phenology, enabling degree-day modeling for monitoring and prediction.
Fenusella
Fenusella is a genus of sawflies in the family Tenthredinidae, subfamily Feninae. Species in this genus are known as leaf-miners, with larvae feeding internally on poplar leaves (Populus species). The genus occurs in the Palearctic region, with records from Europe, Scandinavia, and extending into Iran.
Fissicrambus mutabilis
Changeable Grass-veneer, Striped Sod Webworm
Fissicrambus mutabilis, known as the changeable grass-veneer or striped sod webworm, is a crambid moth whose larvae are significant agricultural and turfgrass pests. The species ranges across eastern North America from Quebec to Florida and west to Texas and Illinois. Larvae feed on the roots and foliage of grasses, causing damage to lawns, golf courses, wheat fields, and corn crops.
Flatoidinae
Flatoidinae is a subfamily of planthoppers within the family Flatidae, distinguished by their dorsoventrally flattened body form and wings held in a nearly horizontal position when at rest. Members of this subfamily are found primarily in tropical and subtropical regions, particularly in the Neotropics and West Indies. The subfamily was established by Melichar in 1902 and contains multiple genera including Petrusa and Ormenis. Species in this group are phytophagous and can achieve high population densities on host plants.
Flexamia huroni
Huron River Leafhopper
Flexamia huroni is a leafhopper species in the family Cicadellidae, described by Bess & Hamilton in 1999. It belongs to the genus Flexamia, a group of leafhoppers known for their specialized host plant associations with grasses. The species is named after the Huron River in Michigan, where it was first collected. Like other members of the genus, it likely exhibits strong ecological dependence on specific grass host plants.
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tritici
eastern flower thrips, flower thrips
Frankliniella tritici, the eastern flower thrips, is one of the most abundant flower thrips species in the eastern United States. It inhabits blossoms of wild and cultivated plants, including dandelion, and feeds by extracting nutrients directly from individual plant cells. Unlike several congeners, it is not a vector of Tomato spotted wilt virus and is considered a pest of secondary economic importance. It can be difficult to distinguish from similar Frankliniella species without microscopic examination.
Fumibotys fumalis
Mint Root Borer Moth
Fumibotys fumalis, the Mint Root Borer Moth, is the sole species in its genus. It belongs to the family Crambidae, a group of grass moths. The species is found across most of North America and is associated with mint plants. Its common name derives from the larval habit of boring into mint roots.
Furcula
prominent moths
Furcula is a genus of moths in the family Notodontidae, subfamily Cerurinae. The genus contains multiple species distributed across the Holarctic region. Adults are nocturnal and attracted to light. Larvae are known for their distinctive forked posterior structure, which gives the genus its name (Latin for 'little fork').
Galleria mellonella
Greater Wax Moth, Honeycomb Moth
Galleria mellonella is a globally distributed moth in the family Pyralidae, best known as a destructive pest of honeybee colonies. The larvae tunnel through honeycomb, consuming wax, pollen, honey, and cast skins of bee larvae, causing significant economic damage to apiculture. Adults are nocturnal, with males producing ultrasonic mating calls at 75 kHz. The species has become an important model organism in biomedical research due to its innate immune system functionally similar to mammals, and has attracted recent attention for the ability of its larvae to degrade polyethylene plastic through salivary enzymes.
Gastrallini
death-watch beetles
Gastrallini is a tribe of death-watch beetles within the family Ptinidae. The tribe contains at least four genera: Gastrallus, Falsogastrallus, Hemigastrallus, and Mimogastrallus. Members are wood-boring beetles, with some species known to infest seasoned timber and wooden structures. The genus Gastrallus includes species of economic concern as pests of hardwoods.
Geshna
lesser canna leafroller
Geshna is a monotypic moth genus in the family Crambidae, established by Harrison Gray Dyar Jr. in 1906. The genus contains a single species, Geshna cannalis (Quaintance, 1898), commonly known as the lesser canna leafroller. This small moth has a wingspan of 20–25 mm and exhibits a multivoltine flight pattern with adults active during three distinct periods throughout the year. The genus is distributed across the southeastern United States and extends into Central America and the Caribbean.
Glena
Glena is a genus of geometer moths in the family Geometridae, established by Hulst in 1896. The genus contains approximately 40 described species distributed primarily in the Americas, with documented occurrences in North America, South America, and the Caribbean. Several species have been recorded as economically significant defoliators of plantation forestry, particularly Glena bipennaria bipennaria on African mahogany (Khaya spp.) in Brazil. Host plant relationships vary among species, ranging from specialists to broader associations.
Glycaspis
Glycaspis is a genus of plant-parasitic psyllids in the family Aphalaridae. Species in this genus are strongly associated with Eucalyptus host plants. The genus includes at least two described species: Glycaspis brimblecombei (red gum lerp psyllid), a significant invasive pest of eucalyptus plantations worldwide, and Glycaspis granulata. Many Glycaspis species exhibit high host specificity, often restricted to single Eucalyptus species or closely related host groups. The genus is native to Australia, where it shows patterns of short-range endemism linked to host plant distribution.
Glyphodes
mulberry pyralid moths
Glyphodes is a genus of moths in the family Crambidae, subfamily Spilomelinae, described by Achille Guenée in 1854. The genus contains multiple species distributed across tropical and subtropical regions, with some species having expanded their ranges significantly in recent decades. Several species are economically important as pests of cultivated plants, particularly mulberry (Morus spp.), jack-fruit (Artocarpus heterophyllus), and jasmine (Jasminum spp.). Glyphodes pyloalis, known as the lesser mulberry pyralid or mulberry pyralid, is the most extensively studied species due to its impact on sericulture and mulberry production globally.
Glyphodes pyloalis
lesser mulberry snout moth, lesser mulberry pyralid, beautiful glyphodes moth, mulberry pyralid
Glyphodes pyloalis is a small crambid moth native to Asia that has expanded its range to North America, Africa, and Central Asia. It is a specialist pest of mulberry (Morus spp.), with larvae feeding on leaves and causing significant economic damage to sericulture and mulberry cultivation. The species has shown notable range expansion in recent decades, facilitated by climate warming and wind dispersal. Population dynamics are strongly influenced by temperature extremes, with cold winters causing mass mortality of overwintering larvae.
Gnathotrichus sulcatus
western hemlock wood stainer
Gnathotrichus sulcatus, commonly known as the western hemlock wood stainer, is an ambrosia beetle in the family Curculionidae. It is native to western North America and is a pest of softwood logs, particularly in timber processing areas. The species produces sulcatol as an aggregation pheromone and exhibits secondary attraction behavior. Both sexes respond to host kairomones including ethanol and α-pinene. The beetle cultivates fungal symbionts in its galleries, including Ambrosiella sulcati and Raffaelea sulcati.
Goes pulcher
Living-hickory Borer
Goes pulcher is a wood-boring beetle in the family Cerambycidae, commonly known as the Living-hickory Borer. First described by Haldeman in 1847, it develops in living hickory (Carya) and pecan (Carya illinoinensis) trees. Larvae tunnel beneath the bark, damaging cambium and sapwood. The species has a 2-3 year life cycle and is distributed across Canada and the United States.
Gomphocerinae
slant-faced grasshoppers
Gomphocerinae is a large subfamily of grasshoppers comprising at least 192 genera and 1,274 species distributed across every continent except Antarctica and Australia. Members are commonly known as slant-faced grasshoppers due to their characteristic head morphology. The subfamily is distinguished by a uniform femoral stridulatory mechanism used for acoustic communication, and exhibits remarkable diversity in calling songs and courtship behaviors. Many species inhabit grasslands and serve as important components of terrestrial food webs, though some are significant agricultural pests.
Gonipterus
Eucalyptus Weevils, Eucalyptus Snout Beetles, Eucalyptus Snout Weevils
Gonipterus is a genus of weevils in the family Curculionidae, comprising approximately 20 described species native primarily to Australia. These insects are obligate plant feeders, with many species exhibiting high host specificity. Several species, notably Gonipterus platensis, G. pulverulentus, and G. gibberus, have become significant pests of Eucalyptus plantations globally, having spread to regions where these trees have been introduced. Taxonomic confusion has historically plagued the genus, with DNA studies in 2012 clarifying that populations previously identified as G. scutellatus in New Zealand, North America, western Europe, Africa, and eastern Europe actually represent distinct species. The genus has substantial economic importance in forestry, driving research into biological control agents such as the egg parasitoid Anaphes nitens.
Gonodonta incurva
fruit-piercing moth
Gonodonta incurva is a species of fruit-piercing moth in the family Erebidae. The species was first described by Sepp in 1840 under the basionym Phalaena incurva. It is found in North America, where adults are known to pierce fruit skins to feed on juices. The species is assigned MONA/Hodges number 8542.
Gracillaria
Gracillaria is a genus of small moths in the family Gracillariidae, established by Adrian Haworth in 1828. The genus contains nine recognized species distributed across Europe, Asia, and North America. Members of this genus are leaf-mining moths, with larvae that feed internally on plant tissue. The type species, Gracillaria syringella, was described by Fabricius in 1794 and is known to feed on lilac and privet.
Gracillaria syringella
lilac leafminer, privet leafminer, Lilac Leafminer Moth
Gracillaria syringella is a small leaf-mining moth in the family Gracillariidae, native to Europe and introduced to North America. Adults have a wingspan of 10–13 mm and display distinctive pale yellow-brown forewings with white fasciae and black-margined spots. The species is named for its larval association with lilac (Syringa), though it also mines leaves of privet (Ligustrum) and ash (Fraxinus). It produces two generations annually in most of its range.
Graminella nigrifrons
black-faced leafhopper
Graminella nigrifrons is a leafhopper species in the family Cicadellidae that serves as a significant agricultural pest and plant virus vector. It transmits multiple agronomically important pathogens including corn stunt virus, maize chlorotic dwarf virus, maize fine streak virus, and phytoplasmas. The species feeds on phloem sap of maize, sorghum, oats, and various grass species. Research has characterized its salivary gland transcriptome, revealing 14,297 salivary gland-enriched transcripts and 195 predicted secretory peptides involved in host feeding and potential modulation of plant defenses.
Graphocephala coccinea quadrivittata
Red-banded Leafhopper, Candy-striped Leafhopper, Scarlet-and-Green Leafhopper
Graphocephala coccinea quadrivittata is the inland subspecies of the candy-striped or red-banded leafhopper, distinguished from the coastal nominate subspecies G. c. coccinea by its slightly larger size and four-striped pattern. Adults display vivid scarlet and green longitudinal stripes on the dorsal surface, making them among the most visually striking leafhoppers in North America. This subspecies is a generalist feeder on plant xylem sap and is known to vector Pierce's Disease, a bacterial pathogen lethal to grapevines and other woody plants.
Grapholita delineana
Eurasian hemp moth, hemp moth, hemp borer
Grapholita delineana, commonly known as the Eurasian hemp moth or hemp borer, is a tortricid moth species in the family Tortricidae. It has emerged as a significant economic pest of hemp (Cannabis sativa) in the United States following the crop's legalization for commercial production. The species is native to Eurasia but has established populations in North America where it can cause substantial damage to hemp crops, particularly those grown for cannabidiol (CBD) production.
Greenidea psidii
Greenidea psidii is a species of aphid in the family Aphididae, subfamily Greenideinae. It was described by van der Goot in 1917 and has been recorded in Brazil, Hawaii, and the continental United States. The species is associated with host plants in the genus Psidium, particularly Psidium guajava (guava) and Psidium cattleianum (strawberry guava). It has been recently detected as a non-native species in new geographic regions, raising interest in its potential as an emerging pest.
Grylloprociphilus
woolly beech aphid, boogie-woogie aphid, beech blight aphid
Grylloprociphilus is a genus of woolly aphids in the family Aphididae, established by Smith & Pepper in 1968. The genus contains at least one described species, G. imbricator, commonly known as the woolly beech aphid or boogie-woogie aphid. These aphids are notable for producing dense white waxy secretions that cloak host tree branches, and for their distinctive defensive behavior of synchronized posterior swaying when disturbed. The genus exhibits heteroecious holocyclic life cycles with host alternation between primary and secondary hosts.
Gynaikothrips
fig thrips, gall thrips, leaf-rolling thrips
Gynaikothrips is a genus of tube-tailed thrips in the family Phlaeothripidae, containing more than 30 described species. Members are gall-inducing insects primarily associated with Ficus species (fig trees), causing leaf folding and gall formation. Several species are economically significant pests of ornamental ficus in tropical and subtropical regions, with some having established invasive populations in North America and other regions. The genus is characterized by its intimate host relationship with fig trees and distinctive leaf-gall biology.
Gynaikothrips ficorum
Cuban laurel thrips, fig leaf-rolling thrips
Gynaikothrips ficorum is a tube-tailed thrips in the family Phlaeothripidae, commonly known as the Cuban laurel thrips or fig leaf-rolling thrips. It is a gall-forming pest of Ficus species, inducing characteristic curled and folded leaf galls where it feeds, reproduces, and shelters. The species has achieved near-cosmopolitan distribution through human transport of its host plants. It was first described by Paul Marchal in 1908 as Phloeothrips ficorum.
Gypsonoma aceriana
poplar shoot-borer, Rosy Cloaked Shoot
Gypsonoma aceriana is a small tortricid moth whose larvae bore into poplar and maple shoots, causing economic damage in plantations and nurseries. Native to Europe, it ranges eastward through Russia to Turkey, Iraq, and North Africa. The species has been introduced to Japan, where it exhibits two to three generations annually. It is a significant pest of ornamental poplars, with older larvae destroying terminal shoots and causing bushy, unmarketable growth in young trees.
Hadrobregmini
death-watch beetles
Hadrobregmini is a tribe of death-watch beetles within the family Ptinidae. The tribe contains at least 3 genera and approximately 16 described species. Members of this group are wood-boring beetles, with several genera—particularly Hadrobregmus and Priobium—containing species that infest seasoned timber and structural wood. The tribe is distinguished from other ptinid tribes by specific morphological features of the antennae and pronotum.
Haplorhynchites
head-clipping weevils, leaf and bud weevils
Haplorhynchites is a genus of leaf and bud weevils in the family Attelabidae, comprising ten recognized species. The genus is best known through Haplorhynchites aeneus, commonly called the sunflower head-clipping weevil, which exhibits a distinctive reproductive behavior where females girdle plant stems below the flower head to facilitate larval development. Members of this genus are associated with prairie ecosystems and sunflower plants, with most species described from North America.
Heilus
Heilus is a genus of weevils (Curculionidae: Molytinae: Molytini) established by Kuschel in 1955. The genus contains fourteen described South American species, with eleven species redescribed in a 2020 taxonomic review based primarily on Brazilian specimens. Species identification relies on integument texture and patterns of maculation. The type species is Heilus inaequalis (Boheman, 1836). Some species are associated with economically important plants, including avocado and cacao.
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-mouthpartsHeliothrips haemorrhoidalis
greenhouse thrips, glasshouse thrip, black tea thrips
Heliothrips haemorrhoidalis, commonly known as the greenhouse thrips, is a polyphagous pest species in the family Thripidae. It is parthenogenetic with rare males, and reproduces rapidly in favorable conditions. The species is a significant agricultural pest of greenhouse crops, ornamentals, and fruit trees worldwide, particularly in tropical and subtropical regions. It has been introduced globally and is subject to biological control efforts using parasitoids such as Thripobius semiluteus and Thripobius javae.
Hellula phidilealis
Cabbage Budworm Moth
Hellula phidilealis is a small crambid moth, commonly known as the cabbage budworm moth, whose larvae are specialized pests of cruciferous crops. The species occurs throughout tropical and subtropical regions of the Americas, from the southern United States through the Caribbean and Central America to northern South America. Its association with Brassica crops makes it economically significant in agricultural systems.
Hemileuca oliviae
Range Caterpillar, Range Caterpillar Moth
Hemileuca oliviae, the range caterpillar, is a day-flying saturniid moth native to grasslands of the southwestern United States and northern Mexico. The species is notable for periodic population outbreaks that can cause significant damage to rangeland vegetation, impacting forage availability for livestock. Its distribution is restricted to open grassland habitats due to predation pressure from woodland rodents on eggs and pupae. The moth has been studied extensively for its ecological interactions, including host plant relationships, water physiology, and natural enemy complexes.
pestrangelandgrasslandoutbreakrodent-predationparasitoid-hostday-flying-mothSaturniidaeHemileucasouthwestern-USChihuahuaNew-Mexicolivestock-forage-competitionintegrated-pest-managementAnastatus-semiflaviduscondensed-tannin-responsewater-physiologyPeromyscus-trueipinyon-mouse-predationpopulation-cyclesMONA-number-7729Hodges-number-7729Hendecaneura shawiana
Blueberry Tip Borer Moth
Hendecaneura shawiana is a tortricid moth commonly known as the blueberry tip borer. It is a univoltine species with one generation per year. The larvae are specialized feeders that bore into the shoot tips of blueberry plants, causing characteristic dieback damage. It is recognized as a pest of cultivated blueberry in northeastern North America.
Herpetogramma
grass webworms, sod webworms
Herpetogramma is a genus of moths in the family Crambidae, subfamily Spilomelinae, comprising approximately 106 species distributed across North America, Eurasia, Australia, New Zealand, Central and South America. Larvae of most species are associated with grasses and related plants, with several species recognized as agricultural or turf pests. The genus was established by Julius Lederer in 1863.
Heterobostrychus
horned powder post beetles
A genus of wood-boring beetles in the family Bostrichidae, comprising six described species. Members are known for infesting timber, processed wood products, and certain crop plants. The genus has significant economic importance due to damage caused to lumber, furniture, and agricultural commodities. Several species have been introduced beyond their native ranges through international trade in wood products.
Heterobostrychus aequalis
oriental wood borer, lesser auger beetle, oriental bostrichid
Heterobostrychus aequalis is a horned powder-post beetle (family Bostrichidae) and serious pest of seasoned hardwood timber. Native to tropical and subtropical Asia, it has been introduced to multiple continents including North America, Australia, Africa, and Oceania. The species attacks starch-rich sapwood of timber and wood products, often remaining undetected until emergence holes and frass appear. In Florida, it has been intercepted at ports and is now established in the wild. In Australia, its establishment status remains ambiguous despite multiple detections, with evidence suggesting at most a tenuous local population in northern Queensland rather than widespread establishment.
Heterobostrychus brunneus
boxwood borer
Heterobostrychus brunneus, commonly known as the boxwood borer, is a species of horned powder-post beetle in the family Bostrichidae. The species has a remarkably wide distribution spanning Africa, Australia, Europe and Northern Asia (excluding China), and North America. As a member of the Bostrichidae, it belongs to a group of beetles known for their wood-boring habits and association with timber and woody plant materials.
Heteropeza
Heteropeza is a genus of gall midges and wood midges (family Cecidomyiidae) comprising approximately six described species. The genus is notable for its unusual paedogenetic life cycle, in which immature larvae reproduce parthenogenetically without metamorphosis to the adult stage. Heteropeza pygmaea, the best-studied species, has been observed in association with shiitake mushrooms (Lentinula edodes) and exhibits unique chromosomal biology including chromosome elimination during early embryonic development.
Heterotermes aureus
Desert Subterranean Termite
Heterotermes aureus is a subterranean termite native to the deserts of North America. Colonies are large, with estimates ranging from 45,000 to over 2 million individuals. The species is notable for its ability to forage in drier conditions than other desert subterranean termites and for its distinctive soldier mandible morphology.
Hexeris enhydris
Seagrape borer
A moth in the family Thyrididae whose larvae bore into the twigs of seagrape and pigeon-plum, causing damage to these coastal plants. Native to Florida and the Caribbean, it is primarily known for its larval boring behavior rather than adult activity. The species has been studied for its economic impact on ornamental and native coastal vegetation.
Hishimonus sellatus
Hishimonus sellatus is a leafhopper species in the tribe Opsiini, known primarily as a significant agricultural pest and phytoplasma vector. It transmits multiple plant pathogens including the agents of Jujube Witches Broom disease, Mulberry yellow dwarf disease, and Rhus yellows. The species has been collected from mulberry fields and shows persistent transmissibility of phytoplasmas throughout its lifetime. Its mitochondrial genome has been characterized, representing the shortest mitogenome reported in Deltocephalinae at 14,690 bp.
Hofmannophila
brown house moth (for sole species H. pseudospretella)
Hofmannophila is a monotypic genus of concealer moths (family Oecophoridae) containing a single species, H. pseudospretella, commonly known as the brown house moth. The genus appears closely related to Borkhausenia. The sole species is a significant synanthropic pest with nearly worldwide distribution, particularly abundant in Britain.
Hofmannophila pseudospretella
Brown House Moth, Samenmotte (German)
A cosmopolitan pest moth of stored products and dwellings. Larvae feed on keratinous materials including wool, fur, and feathers, as well as dried plant matter. Adults are nocturnal and exhibit complex sexual behavior involving pheromone-mediated mate location. The species is the sole member of its genus, though its distinctness from related genera remains under study.