Biological-control
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Euschistus crenator
Euschistus crenator is a phytophagous stink bug (Hemiptera: Pentatomidae) recognized as a key pest in soybean cultivation, causing direct damage to developing grains. The species occurs across the Caribbean, Central America, North America, and South America, with confirmed populations in northern Brazil (Roraima and Pará states). Second-instar nymphs exhibit high susceptibility to entomopathogenic fungi, and the egg parasitoid Telenomus podisi has been confirmed to parasitize its eggs. The species is frequently misidentified with Euschistus heros due to morphological similarities.
Euschistus servus
Brown Stink Bug
Euschistus servus, commonly known as the brown stink bug, is a native North American pentatomid species distributed across Central America and North America. It is a significant agricultural pest in the southern United States, feeding on a wide range of crops including soybeans, cotton, corn, peanuts, peaches, and pecans. The species is highly mobile, capable of dispersing up to 15.9 km in flight mill studies, and exhibits seasonal movement between crop hosts and non-crop habitats. Two subspecies are recognized: E. s. servus and E. s. euschistoides.
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servus euschistoides
brown stink bug
Euschistus servus euschistoides is a subspecies of brown stink bug in the family Pentatomidae. It is a nominal phytophage documented to exhibit facultative predatory behavior on caterpillars. The subspecies occurs in North America and is part of the Euschistus servus species complex, which includes agricultural pests of soybean and other crops. Observations in central New York State confirmed predation on Pieris rapae larvae.
Eusemion
Eusemion is a genus of parasitoid wasps in the family Encyrtidae, first described by Dahlbom in 1857. The genus is represented in the UCR Encyrtidae collection by specimens identified as Eusemion longipennis (Ashmead) and additional undetermined species. Encyrtidae are small chalcidoid wasps that parasitize other insects, particularly scale insects and other Hemiptera. The family is one of the most species-rich groups within Chalcidoidea, with the UCR collection containing representatives of 261 valid genera.
Eustala
humpbacked orb-weavers
Eustala is a genus of orb-weaver spiders in the family Araneidae, first described by Eugène Simon in 1895. As of November 2024, the genus contains 87 species distributed primarily across the Americas, from the United States through Central America to South America, with highest diversity in Brazil, Uruguay, and Argentina. Several species have been documented exhibiting specialized ecological relationships, including myrmecophily (living among ants) in Central American species that inhabit ant-defended acacia plants. The genus includes the well-known humpbacked orb-weaver, Eustala anastera, found across North and Central America.
Araneidaeorb-weaverspiderhumpbackedmyrmecophilyant-plant-mutualismNeotropicalNearcticEustala-anasteraEustala-oblongaEustala-illicitaweb-buildingpredatoracaciaPseudomyrmexPanamaBrazilGalápagosSimon-1895arachnologyentomologytropical-ecologycommensalismontogenyballooningoverwinteringjuvenilespider-wasp-preyCaliadurgus-hyalinatushost-parasitoid-interactionsthird-party-exploitationmutualism-exploitationcryptic-colorationnocturnal-foragingdiurnal-hiding-behaviorthorn-defenseorb-web-architecturesawtoothed-webpopulation-ecologysubstrate-selectionspatial-distributionspecies-diversityendemic-speciestaxonomic-revisionnomen-dubiumgenitalic-morphologymicroscopy-identificationtemperate-North-AmericaCentral-AmericaSouth-AmericaCaribbeanPacific-islandsconservation-biologyclimate-change-vulnerabilityphenology-disruptionwinter-activityspring-emergenceforest-understorydry-forestmoist-forestripariangrasslandscrubedge-habitatwoodlandparklandurban-adaptedgeneralist-predatorspecialist-predatorant-alate-predationherbivore-interceptionecosystem-servicebiological-controlnatural-historyfield-identificationcryptic-species-complexsexual-dimorphismwingless-female-mothsballooning-dispersalsilk-productionweb-ontogenyinstar-developmentoverwintering-strategycold-hardinessmetabolic-suppressiondiapausevoltinismunivoltinebivoltinemultivoltineseasonal-polyphenismcolor-morphpattern-polymorphismhabitat-specificityhost-plant-specificityant-colony-integrationalarm-pheromone-avoidancesting-avoidancepredator-avoidancebird-predationlizard-predationwasp-predationassassin-bug-predationstink-bug-predationdefensive-behaviorthanatosiscamouflagemasquerademimicryaggressive-mimicryforaging-ecologyprey-captureweb-maintenanceweb-repairsilk-recyclingenergeticsreproductive-outputfecundityegg-sac-constructionmaternal-caremale-searching-behaviormate-locationpheromone-communicationvibratory-communicationvisual-signalingterritorialityweb-site-fidelityweb-site-tenacitydispersal-behaviorcolonization-abilityrange-expansioninvasive-potentialnon-native-speciesintroduced-speciessynanthropicagricultural-landscapeorchardvineyardforest-plantationconservation-statusdata-deficientIUCNCITESprotected-areanational-parksoberaniachiribiquetegalapagosfloreanaecuadorperuboliviachileargentinauruguayparaguayvenezuelacolombiacosta-ricanicaraguahondurasguatemalabelizemexicousacanadacubahispaniolajamaicapuerto-ricotrinidadtobagobarbadoslesser-antillesgreater-antilleswest-indiescaribbean-basinamazon-basinorinocoparanapantanalcerradocaatingaatlantic-forestpampaschacoyungasvaldivianmagellanicfynbosnoneresearch-modeleducational-resourcecitizen-scienceinaturalistgbifcatalogue-of-lifencbiwikipediazootaxajournal-of-natural-historypsycheentomology-todaybug-ericaraneologychelicerate-biologyarthropod-ecologytropical-biologyneotropical-faunanearctic-faunaholarticpantropicalgondwananbiogeographyphylogeographymolecular-systematicsmorphological-taxonomyintegrative-taxonomyspecies-conceptcryptic-diversityundescribed-speciesnew-species-descriptionredescriptionneotype-designationlectotype-designationtype-localitytype-specimenmuseum-collectionvoucher-specimendna-barcodingcoiitsphylogenomicstranscriptomicsproteomicsmetabolomicsecological-genomicsadaptationlocal-adaptationphenotypic-plasticitycanalizationevolutionary-developmental-biologyevo-devobehavioral-ecologysensory-ecologyvisual-ecologychemical-ecologymechanoreceptionproprioceptionneuroethologyhunting-behaviorweb-building-behaviorconstruction-behaviortool-useextended-phenotypeniche-constructionecosystem-engineeringtrophic-cascadefood-webenergy-flownutrient-cyclingdecompositionpredator-prey-dynamicspopulation-dynamicsmetapopulationsource-sink-dynamicshabitat-fragmentationedge-effectscorridorsconnectivitylandscape-ecologymacroecologybiogeochemistryclimate-envelopespecies-distribution-modelingmaxentbioclimworldclimremote-sensinggisspatial-analysisgeostatisticsabundancedensitybiomassproductivitydiversity-indexrichnessevennessdominancerarityendemismbeta-diversitygamma-diversityalpha-diversityturnovernestednesscommunity-assemblyneutral-theoryniche-theorycompetitionfacilitationapparent-competitionindirect-effectsinteraction-networksmutualismparasitismpredationherbivorydetritivoryscavengingcannibalismintraspecific-competitioninterspecific-competitioncharacter-displacementresource-partitioningniche-differentiationcoexistencestabilityresilienceresistancerecoverysuccessiondisturbanceperturbationextinctioncolonizationinvasionestablishmentspreadimpactrisk-assessmentmanagementcontroleradicationrestorationreintroductionrewildingconservation-breedingex-situin-situprotected-area-networkgap-analysissystematic-conservation-planningprioritizationhotspotcoldspotmajorityminorityflagshipumbrellakeystonefoundationecosystem-engineerindicatorsentinelbioindicatorbiomonitorecosystem-healthenvironmental-qualitypollutionpesticideheavy-metalcontaminantbioaccumulationbiomagnificationtoxicologyriskhazardexposuredose-responseno-observed-effect-concentrationlowest-observed-effect-concent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htperchroostnestdenburrowtunneldigexcavateminequarryextractremoveeliminateeradicateexterminatedestroydemolishruinwreckdamageharminjurehurtwoundmaimcripplelamedisableincapacitateparalyzestunshockastonishamazeastoundstaggerstupefydazebewilderconfusepuzzleperplexbafflemystifyenigmaEutherini
Eutherini is a tribe of tachinid flies within the subfamily Dexiinae. The tribe contains two genera: Euthera Loew, 1854 and Redtenbacheria Schiner, 1861. Members are parasitoid flies whose larvae develop inside other insects.
Euthycera
Euthycera is a genus of marsh flies in the family Sciomyzidae, commonly known as snail-killing flies. The genus contains approximately 30 described species distributed primarily across the Palearctic region. Members of this genus are predators or parasitoids of freshwater snails and slugs, making them significant biological control agents. The genus was established by Latreille in 1829 and is classified within the tribe Tetanocerini.
Euthyrhynchus
Florida predatory stink bug
Euthyrhynchus is a monotypic genus of predatory stink bugs in the family Pentatomidae, subfamily Asopinae. The sole species, E. floridanus (Florida predatory stink bug), is native to the southeastern United States and has expanded its range northward in recent decades, now regularly occurring as far north as the Mid-Atlantic and New England. This carnivorous shield bug is considered beneficial in agricultural and garden settings due to its predation on pest insects.
Euthyrhynchus floridanus
Florida predatory stink bug
Euthyrhynchus floridanus, commonly known as the Florida predatory stink bug, is a carnivorous shield bug in the family Pentatomidae and the sole species in its genus. Native to tropical and semi-tropical regions of the Americas, it has expanded its range northward in recent decades due to climate warming. This beneficial insect is a generalist predator that feeds on numerous agricultural and garden pests, including caterpillars, beetle larvae, and other stink bugs. Its distinctive orange and black coloration makes it easily recognizable among predatory true bugs.
Eutreta
Eutreta is a genus of fruit flies (family Tephritidae) established by Loew in 1873. The genus comprises 36 species distributed across three subgenera: Eutreta, Metatephritis, and Setosigena. Species in this genus are known for inducing galls on host plants, with documented associations to Asteraceae and Verbenaceae families. At least one species, Eutreta xanthochaeta, has been introduced to multiple regions for attempted biological control of invasive weeds.
Eutrichosoma
Eutrichosoma is a genus of parasitoid wasps in the family Eutrichosomatidae (Chalcidoidea). The genus is notable for its planidial first-instar larvae—highly mobile, host-seeking forms that actively locate hosts rather than being deposited directly on or in them. At least two species are recognized: E. mirabile Ashmead and E. burksi Baker & Heraty. The subfamily Eutrichosomatinae belongs to the Planidial Larva Clade within Chalcidoidea.
Eutrombidium
Eutrombidium is a genus of parasitic mites in the family Microtrombidiidae. Larval stages are ectoparasites primarily of grasshoppers and related orthopterans, with some records from beetles and crickets. The genus has been documented across Australia, Asia (Laos, Indonesia, Sri Lanka, Iran, Pakistan), and Europe. Attachment sites on hosts include leg insertions and the prosternum.
Euwallacea perbrevis
tea shot-hole borer
Euwallacea perbrevis, the tea shot-hole borer, is an invasive ambrosia beetle native to South and Southeast Asia through Australia. It is part of the Euwallacea fornicatus cryptic species complex, distinguished from its three sibling species (E. fornicatus, E. fornicatior, and E. kuroshio) primarily through molecular genetics rather than morphology. The beetle cultivates symbiotic fungi in galleries bored into host trees and vectors fungal pathogens causing Fusarium branch dieback. It has been introduced to the United States (Florida, Hawaii), Costa Rica, and Panama, where it poses significant economic threats to avocado production and urban trees.
Evania
ensign wasps
Evania is a genus of ensign wasps in the family Evaniidae, comprising more than 60 described species. All members of this genus are cockroach egg parasitoids, with females laying eggs inside cockroach oöthecae (egg capsules). The most widespread and well-studied species, Evania appendigaster, has been introduced globally and is frequently associated with urban environments where its cockroach hosts occur. These wasps are recognized by their distinctive flag-like abdomens, which they characteristically wave while walking.
Evania appendigaster
blue-eyed ensign wasp
Evania appendigaster is a parasitoid wasp in the family Evaniidae, commonly known as the blue-eyed ensign wasp. It is one of the larger ensign wasps, with forewings reaching about 7 mm and body length up to 11 mm. The species is a solitary oothecal parasitoid that attacks the egg cases of multiple cockroach species. It likely originated in Asia and has become widespread globally, particularly in tropical, subtropical, and temperate urban environments.
Evaniidae
ensign wasps, nightshade wasps, hatchet wasps, cockroach egg parasitoid wasps
Evaniidae is a family of solitary parasitoid wasps commonly known as ensign wasps, nightshade wasps, or hatchet wasps. The family comprises approximately 20 extant genera containing over 400 described species, with a nearly cosmopolitan distribution excluding polar regions. Evaniidae are immediately distinctive among Hymenoptera due to their unique morphology: the metasoma (abdomen) is attached very high on the propodeum, well above the hind coxae, and is connected by a long, one-segmented, tube-like petiole. The common name "ensign wasp" derives from the characteristic habit of these wasps to jerk their small, flag-like metasoma up and down while walking. All known evaniid larvae are specialized parasitoids that develop inside the egg cases (oothecae) of cockroaches (Blattodea), consuming the host eggs.
Evergestis
Evergestis is a genus of crambid moths established by Jacob Hübner in 1825. Species within this genus are distributed across the Palaearctic region, with some exhibiting highly disjunct, fragmented distributions. Several species are documented agricultural pests of cruciferous crops, including E. rimosalis (cross-striped cabbageworm) and E. forficalis. The genus has been subject to recent taxonomic revision, with new species described from Central Asia and Iran.
Evergestis rimosalis
cross-striped cabbageworm, Cross-striped Cabbageworm Moth
Evergestis rimosalis is a crambid moth commonly known as the cross-striped cabbageworm. It is recognized as a pest of brassica crops in eastern North America and serves as a host for the gregarious endoparasitoid wasp Cotesia orobenae. The species has been studied primarily in the context of biological control research.
Exapion
seed weevils
Exapion is a genus of straight-snouted weevils in the family Brentidae. Species are specialized seed predators of leguminous plants, particularly members of the Fabaceae tribe Genisteae. Several species have been employed as biological control agents against invasive shrubs. The genus was separated from Apion based on morphological and genetic evidence.
Exapion ulicis
Gorse Seed Weevil
Exapion ulicis is a small seed-feeding weevil specialized on gorse (Ulex europaeus). Adults are light gray with a prominent snout roughly half the body length. The species is native to western Europe and has been introduced to New Zealand, California, Hawaii, and other regions as a biological control agent targeting invasive gorse populations. Larval feeding destroys seeds within pods, reducing plant spread, while adult feeding on stems and spines causes minor damage.
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rational-extensive-Pareto-optimal-individually-rational-Nash-stable-setminimal-weakly-retentive-Pareto-optimal-individually-rational-Nash-stable-setminimal-strongly-retentive-Pareto-optimal-individually-rational-Nash-stable-setminimal-collectively-retentive-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-retentive-Pareto-optimal-individually-rational-Nash-stable-setminimal-Nash-retentive-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-rational-retentive-Pareto-optimal-individually-rational-Nash-stable-setminimal-weakly-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-strongly-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-collectively-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-rational-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-weakly-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-strongly-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-collectively-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-Nash-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-rational-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-weakly-individually-rational-Pareto-optimal-individually-rational-Nash-stable-setminimal-strongly-individually-rational-Pareto-optimal-individually-rational-Nash-stable-setminimal-collectively-individually-rational-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-individually-rational-Pareto-optimal-individually-rational-Nash-stable-setminimal-Nash-individually-rational-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-rational-individually-rational-Pareto-optimal-individually-rational-Nash-stable-setExenterus
Exenterus is a genus of parasitoid wasps in the family Ichneumonidae, subfamily Tryphoninae, first described by Hartig in 1837. The genus contains species that are specialized parasitoids of sawflies in the family Diprionidae, with documented hosts including Neodiprion sertifer, N. swainei, N. autumnalis, Diprion sertifer, and Zadiprion falsus. Several species have been introduced across continents for biological control of pine sawfly pests. The genus exhibits notable morphological diversity in egg structure, with European species showing an evolutionary gradient from simple to highly specialized stalked eggs that correlates with climatic tolerance and biological control success.
Exenterus amictorius
Exenterus amictorius is an ichneumonid parasitoid wasp introduced to North America that attacks sawfly larvae (Hymenoptera: Diprionidae), particularly during the pre-spinning eonymph stage. The species exhibits adaptive host discrimination behavior that changes during the host's spinning period, lacks discrimination initially but rapidly acquires and maintains this ability. It shows strong positive density-dependent responses to host abundance and has established successfully on multiple diprionid hosts across North America. In multiparasitism situations with the native E. diprionis, E. amictorius consistently survives due to faster larval development.
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Exeristes is a genus of ichneumon wasps (family Ichneumonidae) containing approximately nine described species. Species in this genus are ectoparasitoids of insect larvae. Exeristes roborator has been extensively studied for its associative learning abilities, demonstrating capacity to learn olfactory and visual cues associated with host microhabitats. E. comstockii has been used in nutritional studies examining dietary requirements for reproduction.
Exeristes comstockii
Exeristes comstockii is a parasitoid wasp in the family Ichneumonidae. Laboratory studies indicate it is a koinobiont parasitoid with documented host associations including Galleria mellonella and Lucilia sericata. Adult females require specific dietary components—amino acids, salts, and vitamins—for maximal fecundity. The species exhibits unusual fatty acid metabolism, directly incorporating host lipids rather than maintaining species-characteristic fatty acid profiles.
Exochomus
Exochomus is a genus of lady beetles in the family Coccinellidae, first described by Redtenbacher in 1843. The genus comprises at least 77 recognized species distributed globally. Multiple species have been studied as biological control agents against mealybugs and other soft-bodied pests in agricultural and forestry systems. Research has focused particularly on E. nigripennis in Egypt and E. flaviventris in Central Africa as predators of invasive mealybug species.
Exorista larvarum
Exorista larvarum is a Palaearctic tachinid fly and polyphagous larval endoparasitoid of Lepidoptera. The species was introduced to North America in the 20th century for biological control of the gypsy moth (Lymantria dispar). It is notable for being one of the few parasitoids that can be efficiently reared from egg to adult on artificial diets without living hosts, making it a promising candidate for mass production in augmentative biological control programs.
Exoristinae
Exoristinae is a subfamily of tachinid flies (Diptera: Tachinidae) comprising approximately 1,000 described species across 11 tribes. Most species are parasitoids of Lepidoptera caterpillars, though some tribes exhibit host specificity for other insect orders including Orthoptera and Heteroptera. The subfamily is distributed worldwide with greatest diversity in the Neotropics. Several species have been employed in biological control programs against agricultural pests.
Exoristini
Exoristini is a tribe of flies within the family Tachinidae, subfamily Exoristinae. The tribe contains approximately 22 genera, including the type genus Exorista Meigen, 1803. Members are parasitoid flies, with larvae typically developing inside other insects. The tribe is distinguished from related tachinid tribes by morphological features of the male terminalia and larval cephalopharyngeal skeleton. Exoristini has a cosmopolitan distribution, with species found across multiple continents.
Exothecinae
Exothecinae is a subfamily of Braconidae parasitoid wasps, currently comprising approximately 24 genera including Colastes, Pambolus, Hormius, and Xenarcha. Members are cyclostome braconids characterized by reduced genus diversity relative to other subfamilies. The subfamily exhibits broad host associations across multiple insect orders, with larvae parasitizing primarily concealed-feeding hosts such as leaf-mining and stem-boring insects.
Falconia
Falconia is a genus of plant bugs in the family Miridae, established by Distant in 1884. Species within this genus are phytophagous and associated with specific host plants. Falconia incaica has been documented feeding on Ricinus communis (castor bean) in Colombia, while F. intermedia has been investigated as a biological control agent for the invasive weed Lantana camara in Australia and Africa. Nymphal instars can be differentiated by morphological features including antennal segment measurements and coloration changes.
Feltiella
Feltiella is a genus of predatory gall midges (Cecidomyiidae) whose larvae feed on spider mites (Tetranychidae). The genus includes commercially important biological control agents, particularly F. acarisuga, which is mass-reared for augmentative biocontrol of tetranychid mites in greenhouse and agricultural systems. Larvae are voracious predators of spider mite eggs, with documented consumption rates exceeding 150 eggs per larva. Adults are short-lived and do not feed on prey.
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.
Fiorinia
Fiorinia is a genus of armored scale insects (family Diaspididae) comprising approximately 70 species. The genus is characterized by pupillarial development, where the adult female remains enclosed within the second-instar exuviae. Species are predominantly distributed in tropical and subtropical Asia and the Pacific Islands, though several have become invasive pests globally through trade in ornamental plants. Notable invasive species include F. externa (elongate hemlock scale), F. fioriniae (palm fiorinia scale), F. phantasma (phantasma scale), and F. theae (tea scale).
Fiorinia externa
elongate hemlock scale
Fiorinia externa, the elongate hemlock scale, is an invasive armored scale insect native to Japan and southern China. Accidentally introduced to North America around 1908, it has become established throughout the northeastern United States and threatens hemlock (Tsuga) and related conifers. The species is a pupillarial scale, with adult females remaining within their second-instar exuviae. Heavy infestations cause yellowing, premature needle drop, branch dieback, and occasional tree death. It poses particular economic concern for Fraser fir Christmas tree production in the southeastern United States, where it can persist on harvested trees for up to 13 weeks post-harvest.
Forficula
earwigs
Forficula is the largest genus of earwigs, containing at least 68 species. The genus was established by Linnaeus in 1758 and is native to Afro-Eurasia, primarily Europe, though it now occurs on all continents except Antarctica. The best known species is Forficula auricularia, a common household and agricultural pest that has been introduced to North America, Australia, and New Zealand. Members of this genus exhibit maternal care of eggs and nymphs, a rare trait among insects.
Forficula auricularia
European earwig, common earwig
Forficula auricularia is an omnivorous earwig native to Europe, western Asia, and North Africa, now invasive across North America, Australia, and New Zealand. It is recognized by forceps-like cerci—curved in males, straight in females—and concealed hindwings that unfold to resemble human ears, inspiring both its common name and specific epithet. The species exhibits extended maternal care, with females guarding eggs and nymphs in underground nests. Population dynamics vary geographically: temperate populations typically produce one brood annually, while warmer regions may support two broods.
Franklinothrips
Franklinothrips is a pantropical genus of predatory thrips in the family Aeolothripidae, comprising 14 recognized species. The genus is distinguished by striking ant-mimicry, particularly in females, which exhibit fast-running behavior and body forms resembling ants or bethylid wasps. Most species are bisexual with localized distributions, though F. vespiformis is notably unisexual and widespread. Several species have been developed as biological control agents against pest thrips in greenhouses and agricultural systems.
Franklinothrips vespiformis
Vespiform Thrips, Vespiform Thrip
Franklinothrips vespiformis is a predatory thrips species in the family Aeolothripidae, notable for its ant-mimicking adult morphology and distinctive red, humped-back larvae. It is widely distributed across tropical and subtropical regions worldwide and has been extensively studied as a biological control agent for various agricultural and greenhouse pests. The species exhibits myrmecomorphy—mimicking ants in appearance and fast, erratic movement behavior—which likely serves as a defense against predation. It is primarily parthenogenetic, with males being rare.
Fuscuropoda
uropodid mite
Fuscuropoda is a genus of predatory mites in the family Dinychidae (order Mesostigmata). The best-known species, Fuscuropoda vegetans, serves as a biological control agent in poultry facilities, where it preys on early-stage house fly larvae in manure. These mites occur naturally in most poultry operations and contribute to integrated pest management programs targeting fly populations.
Galeopsomyia
Galeopsomyia is a New World genus of minute parasitoid wasps in the family Eulophidae. Species within this genus function as hyperparasitoids, attacking gall-inducing wasps of the genera Eurytoma and Torymus, and have been documented as parasitoids of gall midges (Cecidomyiidae) and the citrus leafminer. A notable species was fortuitously discovered providing biological control of the citrus pest Phyllocnistis citrella. The genus exhibits intraspecific phenotypic matching in ovipositor size relative to gall thickness.
Galerucella
leaf beetles
Galerucella is a genus of leaf beetles (Chrysomelidae) described by Crotch in 1873. The genus is widely distributed globally but absent from the Neotropics. Several species have been extensively studied for biological control applications, particularly against invasive aquatic plants such as purple loosestrife (Lythrum salicaria) and waterlilies. The genus has become a model system for ecological and evolutionary research, with genome assemblies available for three species (G. calmariensis, G. pusilla, and G. tenella).
Galerucella nymphaeae
water-lily beetle, water lily leaf beetle
Galerucella nymphaeae is a univoltine skeletonizing leaf beetle in the family Chrysomelidae. Adults and larvae feed on aquatic and semi-aquatic host plants, primarily in the families Nymphaeaceae and Polygonaceae. The species exhibits a distinctive reproductive diapause strategy where adults mate in summer but delay oviposition until spring after overwintering. Populations show genetically based polymorphisms in morphology, size, and reproductive traits associated with host plant use, suggesting incipient host race formation.
Gambrus amoenus
Gambrus amoenus is a species of ichneumon wasp in the family Ichneumonidae, first described by Gravenhorst in 1829. The genus Gambrus belongs to the subfamily Ichneumoninae, a large and diverse group of parasitoid wasps. Species in this genus are known to parasitize lepidopteran larvae, particularly those of moth families such as Noctuidae. G. amoenus is one of several species within the genus that has been documented in Europe and parts of Asia.
Ganaspis
Ganaspis is a genus of parasitoid wasps in the family Figitidae (subfamily Eucoilinae). Species in this genus are larval parasitoids primarily of Drosophilidae and Tephritidae flies. Several species have gained significant attention for biological control of invasive pests, particularly Ganaspis brasiliensis against spotted-wing drosophila (Drosophila suzukii). The genus has been recorded in Asia, North America, South America, and Europe.
Gastrophysa
dock leaf beetles, knotweed leaf beetles
Gastrophysa is a genus of leaf beetles in the family Chrysomelidae, distinguished by pronounced physogastrism in females—swollen, membranous abdomens resulting from enlarged reproductive organs. The genus includes approximately nine described species, with G. viridula and G. polygoni being the most extensively studied. Members are oligophagous specialists on Polygonaceae, serving as both beneficial biological control agents for weeds and occasional minor pests of cultivated buckwheat. Several species have been introduced to North America and other regions, where they have established widespread populations.
Gastrophysa polygoni
Knotweed Leaf Beetle
Gastrophysa polygoni is a small leaf beetle in the subfamily Chrysomelinae, described by Carl Linnaeus in 1758. Adults reach approximately 5 mm in length and display distinctive coloration: metallic green wing cases (elytra), green-blue body, and orange thorax. The species is native to Europe and has become established in North America, where it was introduced early in colonial settlement. It feeds primarily on Polygonaceae plants, serving as a beneficial biological control agent for weeds such as knotweeds and docks, though it occasionally damages cultivated buckwheat. The beetle exhibits complex reproductive behaviors including olfactory examination of airspace, track marking by females, and post-copulatory cleaning rituals.
Gelechiidae
twirler moths, gelechiid moths
Gelechiidae is a large family of small moths, commonly known as twirler moths, that serves as the namesake family for the superfamily Gelechioidea. The family contains over 4,500 described species across more than 900 genera, with particularly high diversity in North America. Members are characterized by their small size, narrow fringed wings, and larvae that typically feed internally on host plant tissues. Many species are significant agricultural pests, while others have been employed for biological control of invasive plants.
Geocoridae
Big-eyed bugs
Geocoridae is a family of predatory true bugs (Hemiptera: Heteroptera) comprising over 290 described species. Members are commonly known as big-eyed bugs due to their prominent, laterally expanded eyes. The family is classified within the superfamily Lygaeoidea and includes five subfamilies: Australocorinae, Bledionotinae, Geocorinae, Henestarinae, and Pamphantinae. Several species, particularly in the genus Geocoris, are recognized as important biological control agents in agricultural systems.
Geocoris atricolor
big-eyed bug
Geocoris atricolor is a species of big-eyed bug in the family Geocoridae, native to western North America. It is one of three Geocoris species studied in California for temperature effects on development and reproduction. Like other big-eyed bugs, it is a predatory insect with piercing-sucking mouthparts, feeding on small arthropod prey and contributing to biological control in agricultural systems.
Geocoris barberi
bigeyed bug
Geocoris barberi is a species of bigeyed bug in the family Geocoridae, described by Readio & Sweet in 1982. Species in the genus Geocoris are recognized as important natural enemies of agricultural insect pests. They serve as biological control agents in integrated pest management programs, particularly in crop systems such as cucumber fields where they help suppress pest populations.