Biological-control
Guides
Erythroneura ziczac
Virginia Creeper Leafhopper
Erythroneura ziczac, commonly known as the Virginia Creeper Leafhopper, is a small leafhopper species in the family Cicadellidae. It is a documented pest of grapevines in North America, particularly in California vineyards where it has been the subject of integrated pest management research. The species feeds on plant sap and is known to overwinter as adults. It is one of several Erythroneura species associated with vineyard ecosystems, distinguished by its specific host plant relationships and population dynamics studied in agricultural contexts.
Erythrothrips
Erythrothrips is a genus of predatory thrips in the family Aeolothripidae, established by Moulton in 1911. The genus contains approximately 11 described species distributed primarily in the Americas, with species recorded from the southwestern United States through Mexico to Brazil. Members of this genus are predatory, placing them among the beneficial thrips that contribute to biological control of pest insects.
Essigella
American Pine Needle Aphids
Essigella is a genus of aphids in the family Aphididae, commonly known as American pine needle aphids. Species in this genus are specialized feeders on Pinaceae, particularly Pinus species. Essigella californica, the type species and most well-known member, is native to western North America and has become an invasive pest in Australia and New Zealand, where it affects commercial pine plantations. The genus is characterized by its association with conifer hosts and its potential to cause defoliation and reduced tree growth.
Eteobalea
Eteobalea is a genus of small moths in the family Cosmopterigidae, established by Hodges in 1962. Some authors treat it as a synonym of Stagmatophora. Species in this genus are root miners, with larvae feeding internally on plant roots. Eteobalea serratella has been investigated as a biological control agent for yellow toadflax (Linaria vulgaris) in agricultural systems.
Etiella
snout moths, pod borers, limabean pod borers
Etiella is a genus of snout moths (Pyralidae: Phycitinae) described by Philipp Christoph Zeller in 1839. The genus contains approximately seven described species, with Etiella zinckenella being the most economically significant as a major pest of legume crops worldwide. Species in this genus are characterized by their larval habit of boring into pods of leguminous plants, causing substantial agricultural damage. The genus has a cosmopolitan distribution spanning tropical, subtropical, and temperate regions across multiple continents.
Euaresta
Euaresta is a genus of tephritid fruit flies comprising 15 species endemic to the Americas. The genus is specialized on host plants in the genera Ambrosia, Xanthium, and Dicoria (Asteraceae), where larvae develop in flowers and seeds. Several species have been introduced outside their native ranges as biological control agents for invasive weeds. The genus was established by Loew in 1873.
Euaresta aequalis
burr-seed fly
Euaresta aequalis is a North American fruit fly in the family Tephritidae, commonly known as the burr-seed fly. It is a specialist herbivore whose only known host is the common cocklebur (Xanthium strumarium). Females possess large ovipositors adapted for penetrating the hard, spiny burr capsules to deposit eggs. The species was introduced to Australia in the 1930s as a biological control agent for invasive cocklebur but established only at low levels and proved ineffective. It is univoltine, with adults active from mid-July to mid-August.
Euborellia annulata
ring-legged earwig
Euborellia annulata is a predatory earwig species in the family Anisolabididae, originally described by Fabricius in 1793. It has been extensively studied as a biological control agent, particularly for lepidopteran pests in corn agroecosystems. The species exhibits five nymphal instars, sexual dimorphism in forceps size and predatory behavior, and is known for its aggressive predation on soft-bodied insect larvae and eggs.
Euborellia annulipes
Ring-legged Earwig, Ringlegged Earwig
Euborellia annulipes, commonly known as the ring-legged earwig, is a widespread earwig species in the family Anisolabididae. It has been introduced to many regions worldwide and is recognized as a significant natural biological control agent in agricultural systems, particularly in banana groves and cornfields. The species exhibits notable parental care behavior by females, who remain sedentary to guard eggs and nymphs. Males are more mobile and frequently engage in egg cannibalism, though they can distinguish their own offspring from unrelated eggs and reduce cannibalism accordingly. The species has been studied extensively for its predatory activity against pests including Spodoptera frugiperda (fall armyworm) and its response to agricultural management practices.
Eucelatoria
Eucelatoria is a genus of tachinid flies (Diptera: Tachinidae) comprising approximately 70 species distributed throughout the Western Hemisphere from southern Canada to northern Argentina. The genus is characterized by distinctive reproductive morphology in females of certain species groups, notably the sword-like piercer found in the E. ferox species group. Species within this genus are parasitoids of Lepidoptera larvae, with documented host associations including Noctuidae (Helicoverpa zea, Heliothis virescens, Heliothis armigera) and Crambidae caterpillars. Several species, particularly E. bryani, have been extensively studied for their potential as biological control agents of agricultural pests.
Eucelatoria bryani
Eucelatoria bryani is a gregarious endoparasitoid tachinid fly native to North America. It parasitizes larval stages of noctuid moths, particularly Helicoverpa zea and Heliothis virescens. The species exhibits sophisticated host manipulation, accelerating host burrowing behavior to ensure pupariation in protected soil environments. It has been extensively studied for its potential as a biological control agent against agricultural pests.
Eucharitidae
eucharitid wasps, ant parasitoid wasps
Eucharitidae is a family of highly specialized parasitoid wasps in the superfamily Chalcidoidea. The family contains approximately 55 genera and over 400 species distributed across four subfamilies: Akapalinae, Eucharitinae, Gollumiellinae, and Oraseminae. Eucharitids are unique among parasitoids in their ability to exploit ants as hosts, overcoming the sophisticated defense systems that typically protect ant colonies. Most species are tropical, though some extend into temperate regions.
Euclemensia schwarziella
A small moth in the family Cosmopterigidae, described by August Busck in 1900 (published 1901). The species is known from Arizona and Texas. Its larvae are parasitoids of scale insects in the genera Kermes and Allokermes, making it one of relatively few moths with this specialized ecological strategy.
Euclytia flava
Euclytia flava is a tachinid fly parasitoid of stink bugs (Pentatomidae) native to North America. The species has been demonstrated to use host pheromones and allomones as kairomones for host-finding, with distinct kairomone strains that respond to different host species' semiochemicals. It has been tested for classical biological control applications, showing preference for exotic pentatomid species over indigenous hosts in choice tests. The species can be captured in large numbers using pheromone-baited traps targeting its native host Podisus maculiventris.
Eucoilini
Eucoilini is a tribe of small parasitoid wasps within the family Figitidae. Members are known primarily for their association with Drosophila fruit flies as hosts. The tribe contains genera such as Ganaspis and Leptopilina, which have been extensively studied in behavioral ecology and host-parasitoid interactions. These wasps are characterized by reduced wing venation and distinctive larval development inside host puparia.
Eucosmophora
Eucosmophora is a genus of leaf-mining moths in the family Gracillariidae, established by Walsingham in 1897. The genus contains approximately 17 described species distributed primarily in the Neotropical region, with some species extending into the Nearctic. Members are characterized by their larval habit of creating blotch mines in host plant foliage. At least one species, E. schinusivora, has been extensively studied as a potential biological control agent for invasive Brazilian peppertree (Schinus terebinthifolius).
Euderus
Euderus is a genus of chalcid wasps in the family Eulophidae, comprising approximately 77 species with cosmopolitan distribution. The genus is notable for including parasitoid species that manipulate host behavior, most prominently E. set, the "crypt-keeper wasp," which induces gall wasps to create head-plugged exit holes that facilitate parasitoid emergence. In North America alone, the genus contains 25 species arranged in five subgenera. Species exhibit striking metallic coloration ranging from olive green to turquoise to iridescent blue.
Eudorylini
Eudorylini is a tribe of big-headed flies within the family Pipunculidae. The tribe comprises at least eight described genera, including the type genus Eudorylas. Members of this tribe are parasitoids, with larvae developing inside other insects. The tribe is distinguished from related groups by specific morphological characteristics of the head and genitalia.
Eugaurax
frit flies
Eugaurax is a genus of frit flies (Chloropidae) established by Malloch in 1913. The genus contains 11 New World species, with North American representatives including leaf miners of aquatic plants. Larvae of E. floridensis mine tissues of arrowheads (Sagittaria spp.), while E. hydrocotyles is a leaf and stem miner of floating marshpennywort (Hydrocotyle ranunculoides). A species complex centered on E. quadrilineatus occurs throughout the Americas but its larval biology remains largely unknown.
Euhrychiopsis
milfoil weevil
Euhrychiopsis is a genus of small aquatic weevils in the tribe Phytobiini, family Curculionidae. The genus contains at least one well-studied species, Euhrychiopsis lecontei, commonly known as the milfoil weevil. Members of this genus are fully submersed freshwater specialists that feed on watermilfoil plants (Myriophyllum species). The genus has gained attention for its potential use in biological control of invasive aquatic plants.
Euhrychiopsis lecontei
Milfoil Weevil
A small submersed aquatic weevil native to North America, investigated as a biological control agent for invasive Eurasian watermilfoil. Adults and larvae feed on watermilfoil species, with larvae acting as stem borers that damage plant tissue. Populations occur naturally on native northern watermilfoil and have expanded to exotic Eurasian watermilfoil. The species exhibits plastic host preferences influenced by rearing experience, with faster development and larger adult sizes observed on Eurasian watermilfoil despite higher larval survivorship on native hosts.
Eulachnus
Pine Needle Aphids
Eulachnus is a genus of aphids in the family Aphididae, comprising approximately 24 species distributed across Eurasia and the Americas. All species are obligately associated with pine trees (Pinus spp.), feeding on phloem sap from needles. Several species, including E. agilis, E. brevipilosus, and E. rileyi, have been introduced beyond their native European ranges and have become significant pests of commercial pine forestry. The genus exhibits parthenogenetic reproduction with multiple overlapping generations annually, and population dynamics are strongly influenced by seasonal climate patterns.
Eulachnus rileyi
pine needle aphid
Eulachnus rileyi is a pine needle aphid native to North America that has become established in pine plantations across Africa, South America, and Europe. It feeds on phloem sap of pine needles, showing preference for 3-4 year old foliage. Populations exhibit bimodal peaks in spring and autumn, with crashes during heavy rainfall periods. The species reproduces parthenogenetically, producing both winged dispersal forms and wingless forms. It is considered a significant pest in commercial pine plantations, where dense infestations can cause needle yellowing, reduced growth, and tree stress.
Eulophidae
Eulophidae is a large family of minute chalcidoid wasps comprising over 4,300 described species in approximately 300 genera. Members are distinguished by having only four tarsomeres on each leg, a small straight protibial spur, and antennae with two to four funicle segments and at most 10 antennomeres. The majority of species are primary parasitoids of arthropods across all developmental stages, with exceptional diversity in host associations including thrips, leafhoppers, gall wasps, and various other insects. The family includes the former family Elasmidae (now subfamily Elasminae) and is represented globally across virtually all terrestrial habitats, including one aquatic species that parasitizes water-penny beetles.
Eulophinae
Eulophinae is a subfamily of chalcid wasps in the family Eulophidae, comprising over 90 genera. Molecular phylogenetic studies have shown it to be a derived group within Eulophidae, not an ancestral one as previously thought. The subfamily contains three recognized tribes: Eulophini, Elasmini, and Cirrospilini. Members are primarily ectoparasitoids, with some species functioning as hyperparasitoids or gall-formers.
Eulophus
Eulophus is a genus of chalcidoid wasps in the family Eulophidae. Species are gregarious ectoparasitoids, primarily attacking lepidopteran larvae. The genus has been extensively studied for its biological control potential, particularly E. pennicornis against the tomato moth Lacanobia oleracea. Wasp larvae feed externally on host caterpillars and possess sophisticated host manipulation capabilities including developmental arrest and immune suppression.
Eunotidae
Eunotidae is a family of small parasitic wasps in the superfamily Chalcidoidea, elevated to family status in 2022 from the former subfamily Eunotinae of Pteromalidae. The family comprises approximately 23 genera and 17 species worldwide, with most species known as parasitoids of scale insects (Coccoidea). The taxonomic revision was based on integrated molecular, morphological, and life history data.
Eunotus
Eunotus is a genus of chalcid wasps in the family Eunotidae, first described by Walker in 1834. Most species are parasitoids of scale insects (Coccoidea), including coccid scales, felt scales (Eriococcidae), and mealybugs. The genus has a wide geographic distribution spanning the Palearctic, Nearctic, and Oriental regions, with records from Europe, Asia, and North America. Species exhibit morphological traits typical of the family, including distinctive antennal structure and thoracic sculpture.
Euodynerus foraminatus
Potter wasp, Mason wasp
Euodynerus foraminatus is a solitary mason wasp in the family Vespidae, subfamily Eumeninae. Females construct multi-celled nests in pre-existing cavities such as holes in wood or abandoned bee burrows, provisioning each cell with paralyzed caterpillars as food for their larvae. The species is notable for having single-locus complementary sex determination, which typically produces sterile diploid males, yet field studies have documented surprisingly high rates of sibling mating in natural populations. It is widespread across North America and readily uses artificial nest structures such as bee blocks.
Euodynerus hidalgo boreoorientalis
A subspecies of mason wasp in the subfamily Eumeninae, distributed along the Eastern Seaboard of North America. Females nest in pre-existing cavities such as old bee or beetle borings in twigs and stalks, provisioning cells with paralyzed caterpillars. This subspecies is distinguished from the nominate form by reduced red coloration, appearing mostly black with sparse yellow markings.
Euodynerus tempiferus
Euodynerus tempiferus is a species of mason wasp in the subfamily Eumeninae. As a member of the genus Euodynerus, it shares characteristics with other solitary vespid wasps that provision nests with paralyzed caterpillars for their larval offspring. The species was described by Viereck in 1908. Specific biological details for this species remain poorly documented in available sources, though it likely exhibits the general nesting behaviors typical of the genus, including use of pre-existing cavities or self-excavated burrows.
Euoniticellus intermedius
Northern Sandy Dung Beetle
Euoniticellus intermedius is an African dung beetle intentionally introduced to multiple continents for dung burial and livestock pest control. Males possess a distinctive horn absent in females, making it a model organism for sexual selection studies. The species exhibits remarkable tolerance to diverse environments and stressors, though it is sensitive to global change factors including warming and pollution. Larvae feed exclusively on cow dung fiber while adults consume juices from fresh dung.
Eupelminae
Eupelminae is a subfamily of parasitic wasps within the family Eupelmidae (Chalcidoidea). Members exhibit extreme sexual dimorphism, with females possessing a remarkable jumping ability powered by modified mesothoracic musculature and resilin energy storage. Females of many species have reduced flight capability and rely on walking, while males fly readily. The subfamily includes important biological control agents such as species of Anastatus, which parasitize the eggs of diverse hosts including moths, true bugs, cockroaches, and stick insects.
Eupelmus
Eupelmus is a large genus of chalcidoid wasps in the family Eupelmidae, comprising over 330 species with cosmopolitan distribution. Species exhibit dual life histories: most are ectoparasitoids attacking larval and nymphal stages of diverse holometabolous insects, while some are phytophagous with larvae feeding on plant tissues. The genus has been subject to extensive taxonomic revision, with molecular studies challenging the traditional three-subgenus classification (Eupelmus, Episolindelia, Macroneura) in favor of approximately twelve species groups. Several species have demonstrated potential for biological control of agricultural pests.
Eupelmus cushmani
Eupelmus cushmani (Crawford, 1908) is a chalcidoid wasp in the family Eupelmidae, classified within the subgenus Eupelmus (Eupelmus). It is known as a parasitoid of the avocado branch borer Copturus aguacatae (Coleoptera: Curculionidae), with documented occurrences in Mexico, Brazil, and Hawaii. The species was previously described under the synonym Eupelmus amicus Girault.
Eupeodes
Aphideaters, aphideater flies
Eupeodes is a genus of moderate-sized hoverflies in the family Syrphidae, commonly known as aphideaters. Adults are black with yellow markings and are distributed worldwide. The genus is part of the Syrphini tribe and is frequently mistaken for similar genera. Both life stages serve important ecological functions: larvae are aphid predators, while adults are pollinators.
Eupeodes flukei
Fluke's Aphideater
Eupeodes flukei is a species of syrphid fly commonly known as Fluke's Aphideater. As a member of the subfamily Syrphinae, its larvae are aphid predators, contributing to natural pest control in gardens and agricultural settings. Adults are pollinators that visit flowers for nectar. The species exhibits typical hover fly characteristics including wasp-mimicking appearance, hovering flight behavior, and large compound eyes.
Eupeodes montivagus
Red-tailed Aphideater
A flower fly (Syrphidae) known as the Red-tailed Aphideater. Adults are pollinators that visit flowers for nectar. Larvae are aphid predators, with females laying eggs in or near aphid colonies. The species was first described from Colorado by William Morton Wheeler in 1895.
Eupeodes perplexus
bare-winged aphideater
Eupeodes perplexus, commonly known as the bare-winged aphideater, is a hoverfly species native to North America. The species is notable for its distinctive wing venation and abdominal patterning. Adults are nectar feeders, while larvae are predatory, consuming aphids and scale insects. The species is part of the diverse syrphid fauna that contributes to both pollination and biological control in various ecosystems.
Eupeodes pomus
Short-tailed Aphideater
Eupeodes pomus, commonly known as the short-tailed aphideater, is a species of syrphid fly distributed across North America. Adults are flower-visiting insects that feed on nectar and pollen, while larvae are aphid predators. The species belongs to a family noted for wasp-mimicking appearance and hovering flight behavior.
Eupeodes snowi
Snow's Aphideater
Eupeodes snowi is a species of syrphid fly, commonly known as Snow's Aphideater, in the family Syrphidae. As a member of the Syrphinae subfamily, its larvae are aphid predators. The species is part of a diverse genus of hover flies that serve as important biological control agents and pollinators.
Eupeodes volucris
Large-tailed Aphideater, Bird Hover Fly
Eupeodes volucris is a hover fly (family Syrphidae) commonly known as the large-tailed aphideater or bird hover fly. Larvae are aphid predators, feeding on plant-sucking insects. Adults are pollinators that visit flowers for nectar. The species is notable among syrphid flies for its relatively large size and distinctive abdominal patterning.
Euphorinae
The Euphorinae are a large subfamily of Braconidae parasitoid wasps comprising over 1,270 described species worldwide. They are characterized as koinobiont endoparasitoids, typically attacking adult insects or nymphs of hemimetabolous hosts—a notably broad host range among parasitoid wasps. The subfamily is sister to the Meteorinae and has been used in biological pest control programs.
Euphyllura
olive psyllids, olive psylla
Euphyllura is a genus of plant-feeding psyllids (Hemiptera: Liviidae) established by Arnold Förster in 1848. Species are primarily associated with olive (Olea europaea) and related host plants in the Oleaceae. The genus is predominantly Palaearctic in distribution, with most species occurring in southern Europe and Asia, though records extend to southern Africa and western North America. Several species are economically significant pests of olive cultivation, including E. olivina, E. phillyreae, and E. straminea, which damage developing inflorescences and fruits. The genus exhibits typical psyllid biology with temperature-dependent reproduction and seasonal diapause strategies.
Euphyllura olivina
olive psyllid
Euphyllura olivina is a psyllid species in the family Liviidae that feeds exclusively on olive (Olea europaea). Native to the Mediterranean region, it has become invasive in California where it threatens olive production. The species develops two generations annually, with spring and autumn reproductive activity and summer reproductive diapause induced by high temperatures. Nymphal infestations concentrate near fruits and on shaded, lower canopy portions. Temperature sensitivity shapes its distribution and seasonal activity patterns.
Euphyllurinae
Euphyllurinae is a subfamily of jumping plant-lice (Psylloidea) within the family Liviidae. The subfamily includes economically significant species such as the Asian citrus psyllid (Diaphorina citri), a major vector of citrus greening disease (huanglongbing). Until recently, the subfamily was unknown from the Americas, with the 2023 description of Burckhardtiana from Brazil representing the first Neotropical record.
Euplectrus
Euplectrus is a cosmopolitan genus of parasitoid wasps in the family Eulophidae, distinguished by unique morphological and biological traits. All species are ectoparasitoids of caterpillars from diverse moth families. The genus exhibits distinctive larval adaptations, including the ability to spin silk cocoons—a feature unique within Eulophidae. Species-level identification is challenging due to morphological conservatism.
Euplectrus comstockii
Euplectrus comstockii is an ectoparasitoid wasp in the family Eulophidae that parasitizes larval Lepidoptera. Adult females inject venom containing a developmental arrestant that arrests host molting and metamorphosis, maintaining the host in a suitable state for parasitoid offspring development. The species has been studied extensively for its host-parasitoid interactions, venom biochemistry, and potential use in biological control programs. Developmental timing varies with temperature: at 24°C and 72.8% relative humidity, the egg stage lasts approximately 1.75 days, larval stage 5.0 days, prepupa 0.95 days, and pupa 5.5 days.
Euplectrus platyhypenae
Euplectrus platyhypenae is a gregarious ectoparasitoid wasp in the family Eulophidae that develops externally on lepidopteran host larvae. The species has been documented attacking fall armyworm (Spodoptera frugiperda) in laboratory studies and peanut foliage-feeding caterpillars in Oklahoma. Females exhibit host strain preference, ovipositing preferentially on corn-strain fall armyworm over rice-strain hosts. Development is rapid, with egg-to-adult times of approximately 9.8–10.5 days depending on host strain.
Eurygaster
sunn pest, sunn bug, tortoise shieldbug
Eurygaster is a genus of shield bugs in the family Scutelleridae, distributed across Eurasia with some species in North America. The genus includes several economically significant agricultural pests, particularly E. integriceps and E. testudinaria, known as sunn pests that damage cereal crops. Species identification within the genus is challenging due to morphological similarities among closely related taxa. The genus comprises at least 17 extant species plus one fossil species, with six species recorded from Russia.