Generalist-predator
Guides
Amblyseius
Amblyseius is a large genus of predatory mites in the family Phytoseiidae. Species in this genus are generalist predators that feed on pest mites, thrips, whiteflies, and other small arthropods. Several species, particularly A. swirskii and A. andersoni, are widely used as biological control agents in integrated pest management programs for agricultural crops. The genus exhibits considerable ecological versatility, with many species capable of surviving on alternative food sources such as pollen and fungal secretions when prey is scarce.
Amblyseius andersoni
Amblyseius andersoni is a generalist predatory mite in the family Phytoseiidae, widely distributed across Europe, North America, and parts of Asia. It is commercially available and employed as a biological control agent against spider mites, eriophyid mites, and other small arthropod pests in orchards, greenhouses, and open-field crops. The species exhibits broad dietary flexibility, feeding on plant-feeding mites, thrips, whiteflies, and various pollens. Laboratory studies demonstrate that it can be mass-reared on alternative diets such as cattail pollen and the stored product mite Carpoglyphus lactis without loss of predatory efficiency on natural prey.
predatory-mitebiological-controlgeneralist-predatorintegrated-pest-managementspider-mite-controleriophyid-mite-controlorchard-pest-managementgreenhouse-biocontrolmass-rearingpollen-feedingalternative-diettemperature-dependent-developmentPhytoseiidaeAcariEuropeNorth-AmericaChinaapplecitrusconiferous-plantsAmblyseius swirskii
Swirski mite
Amblyseius swirskii is a predatory mite in the family Phytoseiidae, originally described from almond trees in Israel in 1962. It has become one of the most widely used biological control agents globally, commercially available and released in more than 50 countries. The species is a generalist predator feeding on whiteflies, thrips, spider mites, broad mites, and other small arthropod pests of vegetable and ornamental crops. It can also survive and reproduce on non-prey food sources including pollen, nectar, and plant secretions, which enhances its establishment when prey are scarce.
Anystis
Whirligig Mites
Anystis is a genus of predatory mites in the family Anystidae, commonly known as whirligig mites. Species in this genus are generalist predators of small arthropods, including mites, aphids, thrips, and other soft-bodied insects. They are frequently red in coloration with long legs, ranging from 500–1500 μm in size. The genus has gained attention for biological control applications, particularly Anystis baccarum, which has been documented in agricultural systems including apple orchards, raspberry crops, vineyards, and greenhouses.
Anystis baccarum
Whirligig mite
Anystis baccarum is a cosmopolitan predatory mite in the family Anystidae, commonly known as the whirligig mite. It is a generalist predator of small, soft-bodied arthropods including aphids, spider mites, thrips, and other pests in agricultural systems. Populations consist entirely of females that reproduce by thelytokous parthenogenesis. The species has been identified as a promising biological control agent in crops such as raspberry, apple, sweet pepper, and tea, though its cannibalistic tendencies and long generation time limit its effectiveness as a sole control method.
Ceratocombus vagans
litter bug
Ceratocombus vagans is a species of minute true bug in the family Ceratocombidae, commonly known as litter bugs. The species has been described as one of the most generalized members of Hemiptera: Heteroptera, with predatory feeding habits that support the hypothesis that primitive heteropterans were predaceous. It occupies a wide geographic range across North America, Central America, and the Caribbean.
Chrysopa quadripunctata
Four-spotted Green Lacewing
Chrysopa quadripunctata, commonly known as the Four-spotted Green Lacewing, is a species of predatory lacewing native to North America. Adults are recognized by their delicate green bodies, long filamentous antennae, and transparent, finely veined wings. Larvae are aggressive generalist predators, often called "aphid lions" for their voracious consumption of soft-bodied prey. The species has been studied for its behavioral plasticity, with documented individual repeatability and geographic variation in larval behavior.
Chrysoperla comanche
Comanche Green Lacewing
Chrysoperla comanche is a green lacewing species native to northern Mexico and the southern United States, with records extending to Canada, Chile, and Hawaii. It has been evaluated for commercial insectary production due to its non-diapausing behavior in California's San Joaquin Valley, where adults remain green and continue egg deposition through winter months. The species is a generalist predator of soft-bodied arthropods, with documented prey including aphids, leafhoppers, psyllids, whiteflies, thrips, and cochineal insects. It has shown particular promise for biological control in vineyard ecosystems, where it was the most commonly encountered lacewing species in post-release surveys. Development occurs optimally around 29.7°C, with lower temperature threshold near 10°C.
Cicindela tranquebarica tranquebarica
Oblique-lined Tiger Beetle, Oblique-lined Tiger Beetle (nominate subspecies)
Cicindela tranquebarica tranquebarica is the nominate subspecies of the oblique-lined tiger beetle, found across eastern North America. Adults are active in spring and fall, with a life cycle requiring at least one year. The species shows notable habitat flexibility, occurring on dry sandy soils, clay substrates, and saline environments. Adults are generalist predators with large eyes and fast running ability, though they must stop periodically to refocus visually when pursuing prey. The subspecies is distinguished from western populations (C. t. kirbyi) by narrower white elytral maculations.
Efferia staminea
Straw-faced Hammertail
Efferia staminea is a species of robber fly in the family Asilidae. It has been studied for its predatory behavior, with research documenting how its diet varies temporally and spatially in response to prey availability. The species exhibits opportunistic feeding patterns, shifting prey composition based on local prey abundance—including documented increases in ant predation during mating swarms of Formica subpolita. It serves as a generalist predator in grassland ecosystems.
Emesopsis
Emesopsis is a genus of small tropical assassin bugs (family Reduviidae, subfamily Emesinae) containing at least 22 described species. Most species are restricted to tropical Asia and Australia, with E. nubila being the only pantropical species, also occurring in southern Europe. These bugs are characterized by their unusual locomotion using middle and hind legs while the raptorial front legs are reserved for prey capture. They are generalist predators of various small insects.
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.
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htperchroostnestdenburrowtunneldigexcavateminequarryextractremoveeliminateeradicateexterminatedestroydemolishruinwreckdamageharminjurehurtwoundmaimcripplelamedisableincapacitateparalyzestunshockastonishamazeastoundstaggerstupefydazebewilderconfusepuzzleperplexbafflemystifyenigmaEuthyrhynchus 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.
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.
Geocoris limbatus
big-eyed bug
Geocoris limbatus is a species of big-eyed bug in the family Geocoridae, occurring in North America. Like other members of the genus Geocoris, it is a generalist predator of small arthropods and is considered beneficial in agricultural systems. The species was described by Stål in 1874.
Geocoris lividipennis
bigeyed bug
Geocoris lividipennis is a predatory true bug in the family Geocoridae, commonly known as bigeyed bugs. The species is recognized as a beneficial insect in agricultural systems, where it serves as a natural enemy of various crop pests. Adults and nymphs are generalist predators that feed on small arthropods and their eggs. The species has a broad distribution across the Americas and Caribbean islands.
Geocoris punctipes
big-eye bug, bigeyed bug, Corner-spotted Geocoris
Geocoris punctipes, commonly known as the big-eye bug or bigeyed bug, is a predatory true bug in the family Geocoridae. It is a generalist predator found across the Americas and Oceania, with documented effectiveness in biological control of agricultural pests including whiteflies, aphids, moth eggs and larvae, and plant bugs. The species has been extensively studied for its feeding behavior, reproductive biology, and potential as a natural enemy in integrated pest management programs.
Iris oratoria
Mediterranean mantis, iris mantis
Iris oratoria, commonly called the Mediterranean mantis, is a medium-sized praying mantis species native to Europe, North Africa, and parts of Asia. The species has been introduced to the southwestern United States, where it was first recorded in southern California in the 1930s and continues to expand its range. Adults reach approximately 6.5 cm in length and are distinguished by violet-brown eyespots on the hindwings that are displayed during threat responses. The species exhibits facultative parthenogenesis and delayed emergence from oothecae as adaptations that may contribute to its invasive success.
Labidura riparia
shore earwig, tawny earwig, striped earwig, riparian earwig
Labidura riparia is a cosmopolitan earwig species found primarily in tropical to subtropical regions. It exhibits complex subsocial behavior with maternal care of eggs and young. The species is a generalist predator valued for biological pest control, with documented predation on Lepidoptera larvae, insect eggs, and crop pests including the Asian corn borer and Mediterranean fruit fly pupae. Males possess two functional penises but show a 90% preference for the right penis during copulation, a behavioral asymmetry unique among earwigs.
Linyphia triangularis
Common sheetweb spider
Linyphia triangularis is a European sheet-web spider in the family Linyphiidae, first described by Carl Alexander Clerck in 1758. It is abundant throughout Europe and has been introduced to Maine, USA, where it is now established in coastal areas. The species constructs horizontal sheet-webs with 'barrage lines' above to intercept flying prey. Adults are active in late summer and autumn.
Mecynogea lemniscata
Basilica Orbweaver
Mecynogea lemniscata, commonly known as the basilica orbweaver, is a species of orb-weaving spider in the family Araneidae. It occurs across a broad geographic range from the United States to Argentina. Females are generalist predators that employ orb-web hunting strategies. Research has documented sixteen distinct behavioral acts during prey capture, with sequences varying according to prey type.
Mischocyttarus flavitarsis
Western Paper Wasp, Yellow-legged Paper Wasp
Mischocyttarus flavitarsis is a social paper wasp native to western North America, distinguished by its relatively docile defensive behavior compared to other vespids. Colonies are initiated in spring by foundress queens and persist until autumn, with nests typically containing fewer than 300 cells. The species exhibits flexible nesting habits, utilizing both natural cavities in riparian forests and anthropogenic structures such as building eaves. Unlike many social wasps, M. flavitarsis rarely stings, instead employing ramming behavior against perceived threats. Males engage in elaborate lekking and territorial scent-marking behaviors near female hibernation sites in autumn.
Nabidae
Damsel Bugs
Nabidae is a family of predatory true bugs known as damsel bugs, containing over 500 species in approximately 20 genera. These soft-bodied, elongate insects are terrestrial predators that use raptorial forelegs to capture and hold prey, similar to mantids. They are economically important in agriculture due to their predation on crop pests including aphids, lepidopteran eggs, and other small insects. Many species are attracted to lights at night, and some exhibit wing polymorphism with fully winged, short-winged, or wingless forms.
Nabini
Damsel bugs
Nabini is a tribe of damsel bugs in the family Nabidae, comprising predatory true bugs found across diverse terrestrial habitats. Members are characterized by raptorial forelegs adapted for capturing prey, a slender body form, and a prominent curved rostrum. The tribe includes genera such as Nabis, the most speciose genus in the family. Nabini species are active hunters that contribute to biological control of pest insects in agricultural and natural systems.
Nabis
damsel bugs
Nabis is a genus of damsel bugs in the family Nabidae, comprising predatory true bugs found worldwide. Members are small, slender insects typically under 12 mm in length, recognized by their raptorial front legs adapted for capturing prey. They are primarily nocturnal predators that use a combination of ambush and active hunting strategies to subdue insects larger than themselves. The genus is economically significant as a biological control agent in agricultural systems, particularly in cotton and greenhouse crops.
Nabis americoferus
Common Damsel Bug
Nabis americoferus, the common damsel bug, is a small predatory true bug in the family Nabidae. It occurs across North America and Central America, with well-documented populations in eastern Ontario and agroecosystems of the United States. The species produces two generations per year in temperate regions, overwinters as adults in field margins, and colonizes crop fields in late spring. It is an economically important biological control agent, feeding on agricultural pests including aphids, leafminers, and mirid bugs.
Nabis capsiformis
Pale Damsel Bug
Nabis capsiformis, commonly known as the pale damsel bug, is one of the most widespread species in the genus Nabis. It is a generalist predator found across six continents including Africa, Europe, the Americas, and Oceania. The species is particularly abundant in agricultural ecosystems where it serves as a biocontrol agent. Both nymphs and adults are effective predators using raptorial front legs to capture prey.
Nabis inscriptus
damsel bug
Nabis inscriptus is a species of damsel bug in the family Nabidae. It occurs across Europe, Northern Asia (excluding China), and North America. As a member of the genus Nabis, it shares the characteristic predatory habits of damsel bugs, though species-specific behavioral details are not well documented. The species was first described by William Kirby in 1837.
Nabis roseipennis
sculpted damsel bug, damsel bug
Nabis roseipennis is a small predatory true bug in the family Nabidae, commonly known as the sculpted damsel bug. It is one of the most abundant damsel bugs in cotton and soybean agroecosystems across the southeastern United States. The species is univoltine, with adults active from mid-July through September, and functions as a generalist predator of various agricultural pests. It has been extensively studied for its role in biological control and its tritrophic interactions with resistant crop plants.
Oplomus
Oplomus is a genus of predatory stink bugs in the family Pentatomidae, subfamily Asopinae, containing approximately nine described species. The genus has been studied for biological control potential, particularly Oplomus dichrous as a predator of agricultural pests. Members are generalist predators with documented preferences for certain prey types.
Orius tristicolor
minute pirate bug, minute flower bug
Orius tristicolor is a minute pirate bug in the family Anthocoridae, known for its role as a generalist predator of small arthropod pests. The species exhibits behavioral plasticity in foraging, adjusting search effort based on leaf damage and prey type. It develops through five nymphal instars before reaching adulthood and has been documented in agricultural systems, particularly in association with thrips and spider mites. The species occurs across a broad geographic range including North, Central, and South America, the Caribbean, and Oceania.
Perillus lunatus
Perillus lunatus is a species of predatory stink bug in the family Pentatomidae, described by Knight in 1952. Like other members of the genus Perillus, it belongs to the subfamily Asopinae, which contains predatory rather than phytophagous stink bugs. The genus Perillus is best known for P. bioculatus, the two-spotted stink bug, a significant biological control agent of the Colorado potato beetle. Perillus lunatus shares the predatory habits characteristic of this genus, though specific details of its biology are less documented than those of its congener P. bioculatus.
Phalangium opilio
European Harvestman, Common Harvestman, Brown Harvestman, Daddy Longlegs
Phalangium opilio is the most widespread harvestman species globally, native to Europe and much of Asia and introduced to North America, North Africa, and New Zealand. It is a synanthropic species that thrives in human-modified environments including agricultural fields, gardens, and urban green spaces. The species has become a model organism for arachnid developmental biology and comparative genomics due to its ease of laboratory culture and continuous life cycle. Adults are generalist predators and scavengers that contribute to biological pest control in agricultural systems.
Pheidole megacephala
big-headed ant, coastal brown ant, African big-headed ant
Pheidole megacephala is a highly successful invasive ant species native to tropical Africa, considered among the world's worst invasive organisms. It exhibits true worker dimorphism with distinct major and minor worker castes, the former bearing disproportionately large heads used for crushing food. The species forms expansive supercolonies through budding reproduction, enabling rapid territorial expansion. It has spread globally to tropical and subtropical regions, where it aggressively displaces native ant faunas and disrupts ecosystem function through generalist predation and mutualistic associations with sap-sucking insects.
Podisus
spined soldier bugs, predatory stink bugs
Podisus is a genus of predatory stink bugs in the family Pentatomidae containing approximately 17-20 described species. The genus is best known for the spined soldier bug (Podisus maculiventris), a native North American predator widely used in biological control programs. Species in this genus are generalist predators that feed on diverse arthropod prey, with documented predation on over 70 insect species including major agricultural pests. They possess distinctive spiny projections on the shoulders and have been extensively studied for their potential in integrated pest management.
Podisus maculiventris
Spined Soldier Bug
Podisus maculiventris, the spined soldier bug, is a native North American predatory stink bug widely studied for biological control applications. It is a generalist predator of over 70 insect species, including agricultural pests such as the Colorado potato beetle, Mexican bean beetle, and brown marmorated stink bug. Unlike plant-feeding stink bugs, it actively hunts and kills prey using toxic venom and digestive enzymes. Adults overwinter and become active on warm winter days. The species has been extensively researched for augmentative release in agricultural systems, particularly against coleopteran and lepidopteran larvae.
Polistes aurifer
Golden Paper Wasp
Polistes aurifer is a social paper wasp native to western North America, ranging from southern Canada to northern Mexico. The species exhibits pronounced geographic color variation, from predominantly black northern forms to yellow southwestern forms and ferruginous southern populations. It constructs exposed paper nests in sheltered locations and is a generalist predator of caterpillars and other insects. The species has been subject to taxonomic revision, having been treated as a subspecies of P. fuscatus in some classifications, though recent treatments maintain it as distinct.
Priocnemis minorata
spider wasp
Priocnemis minorata is a medium-sized spider wasp in the family Pompilidae. It is among the first pompilid species to appear in spring, with peak activity in April and May. The species is known for hunting spiders in deciduous forest leaf litter, paralyzing them to provision underground nests for its larvae.
Pseudomyrmex pallidus
Pallidus-group Twig Ants
Pseudomyrmex pallidus is a small, slender ant species native to the Nearctic and Neotropical realms, with an extensive range from the southern United States through Central America and into South America. Workers are monomorphic and exhibit variable coloration from yellow to orange or brown. The species nests exclusively in hollow stems of dead grasses and woody twigs, typically at the interface of grassy and wooded habitats. Colonies are facultatively polygynous and polydomous, containing 1–15 queens and 20–200 workers.
Solenopsis invicta
Red Imported Fire Ant, RIFA
Solenopsis invicta is a highly invasive ant species native to South America that has spread to multiple continents, causing significant ecological and economic damage. It forms large, aggressive colonies that dominate disturbed habitats and displace native ant species through competition and predation. The species exhibits flexible colony reproduction through both nuptial flights and colony budding, with some populations containing multiple queens. Its painful sting and tendency to swarm when disturbed make it a serious public health and agricultural pest.
Solifugae
solifuges, camel spiders, sun spiders, wind scorpions, solpugids
Solifugae is an order of arachnids comprising over 1,200 described species in approximately 147 genera and 16 families. These animals are neither true spiders nor scorpions, though they share superficial similarities with both. They are characterized by exceptional speed, large powerful chelicerae used for predation and stridulation, and a preference for arid habitats. The order is divided into two suborders: Australosolifugae (predominantly Southern Hemisphere) and Boreosolifugae (predominantly Northern Hemisphere).
Stagmomantis limbata
bordered mantis, Arizona mantis, bosque mantis, New Mexico praying mantis
Stagmomantis limbata is one of the largest native mantids in North America, reaching approximately 3 inches in length. It exhibits pronounced sexual dimorphism: females are flightless, robust, and typically plain green or gray with a dark spot on the tegmina, while males are slender, long-winged, and capable of flight. The species is notable for female-emitted sex pheromones that attract males, with pheromone production linked to female nutritional status and receptivity. Sexual cannibalism occurs, particularly when females are food-limited.
Steatoda albomaculata
white-spotted false widow, white-spotted false widow spider
Steatoda albomaculata is a small cobweb spider in the family Theridiidae, commonly known as the white-spotted false widow. It is widely distributed across North America, Europe, Russia, North Africa, the Middle East, Central Asia, and East Asia. The species has been studied for its predation efficiency on various prey types and is recognized as a generalist predator. It was formerly considered to have two subspecies, but Steatoda albomaculata infuscata was synonymized with the nominate form in 2024, leaving no valid subspecies.
Steatoda triangulosa
Triangulate Cobweb Spider, Triangulate Combfoot, Triangulate Bud Spider
Steatoda triangulosa is a small cobweb spider in the family Theridiidae, frequently encountered in human-made structures across North America and Europe. Adults measure 3.5–5.9 mm in body length, with females larger than males. The species is recognized by the distinctive triangular pattern on its abdomen. It is synanthropic, thriving in basements, garages, and cellars, and has been introduced to North America from the Palearctic region. The species is not considered dangerously venomous to humans.
Tenodera sinensis sinensis
Chinese praying mantis, Chinese mantis
Tenodera sinensis sinensis, the Chinese praying mantis, is a large non-native mantis in North America, first discovered in 1897 near Philadelphia, likely arriving as a stowaway in nursery stock from Asia. It has become one of the most well-known exotic mantids in the United States, recognized for its substantial size and effective predation on pest insects including the brown marmorated stink bug and spotted lanternfly. The species exhibits flexible hunting strategies that shift between active pursuit and ambush predation depending on satiety level. Adults typically appear in September, with females depositing brown, styrofoam-like egg cases (oothecae) on upright vegetation that overwinter and hatch in spring.
Tupiocoris
Tupiocoris is a genus of plant bugs in the family Miridae containing approximately nine described species. The genus includes both herbivorous and predatory species. Tupiocoris notatus is a Solanaceae-specializing herbivore with documented genome-level research on host plant transcriptional responses. Tupiocoris cucurbitaceus is a generalist predatory mirid studied as a potential biocontrol agent for tomato pests in Argentina. Species within this genus show divergent feeding strategies, with some functioning as herbivores and others as omnivorous predators.
Zelus renardii
leaf hopper assassin bug, sundew assassin bug
Zelus renardii is a medium to large assassin bug native to western North and Central America that has become a successful global invader. The species is diurnal and employs a distinctive predatory strategy using sticky secretions from glandular setae on its forelegs to capture prey, earning it the common name 'sundew assassin bug.' It has been introduced to the Mediterranean basin, Pacific islands, Hawaii, Chile, Argentina, and Easter Island, primarily through human-mediated transport of nursery plants. The species is considered for biological control of agricultural pests but its generalist predatory habits create complex trophic interactions.