Pest Encyclopedia

The world's most destructive migratory pest, capable of forming swarms of billions of individuals that can strip entire regions of vegetation in hours. Plagues threaten food security across 60+ countries spanning Africa, the Middle East, and South Asia.

📍 Recession areas: North Africa, Arabian Peninsula, SW Asia. Invasion zones during plagues extend from West Africa to India.

Originally a New World pest, Fall Armyworm invaded Africa in 2016 and rapidly spread across the entire continent within two years, reaching South Asia and Southeast Asia by 2018–2019. It is now considered the most economically damaging crop pest in sub-Saharan Africa, devastating maize, sorghum, and rice.

📍 Native to tropical Americas. Now established across all of sub-Saharan Africa, South Asia (India, Sri Lanka, Bangladesh), Southeast Asia, and parts of East Asia.

The world's largest hornet at up to 5 cm, native to temperate and tropical forests of East Asia. Known for its devastating predatory attacks on honey bee colonies and its medically significant venom. Gained notoriety after isolated detections in North America in 2019–2020, though its range remains primarily East Asian.

📍 Primary range: Japan, China, Korea, Taiwan, India, Southeast Asia. Occasional detections in North America (Washington State, British Columbia) under active eradication.

The single most economically damaging insect pest of rice in Asia, responsible for billions of dollars in annual losses. It feeds directly on rice phloem sap and vectors two devastating viral diseases: Grassy Stunt and Ragged Stunt viruses.

📍 Throughout tropical and subtropical Asia: China, Japan, Korea, India, Sri Lanka, Bangladesh, Philippines, Vietnam, Indonesia, Thailand.

Large, fast-moving arachnids of the order Solifugae found throughout the arid regions of the Middle East, North Africa, and Central Asia. Not true spiders, they are notorious for their alarming speed, large chelicerae, and fearsome reputation — though they are non-venomous and medically significant only through mechanical bite wounds.

📍 Middle East (Saudi Arabia, Iraq, Iran, UAE, Jordan), North Africa (Egypt, Libya, Morocco, Algeria), Central Asia (Afghanistan, Pakistan). Also found in American southwest and sub-Saharan Africa.

A significant pest of wheat throughout the Middle East, Central Asia, and North Africa, where wheat is the primary staple crop. Larvae cut the stem from inside, causing characteristic 'whiteheads' just before harvest — the stem lodges or snaps, making mechanical harvesting impossible and destroying yield.

📍 Middle East (Turkey, Syria, Iran, Jordan), Central Asia (Kazakhstan, Uzbekistan, Afghanistan), North Africa (Morocco, Algeria, Tunisia, Egypt), also North American Great Plains.

One of the most economically important fruit pests in the world, the Oriental Fruit Fly attacks over 100 species of fruit across tropical and subtropical Asia and Africa. It is a primary quarantine pest that restricts international trade in mangoes, guavas, and other tropical fruits from affected countries.

📍 Native to South and Southeast Asia. Invasive in sub-Saharan Africa (since 2003), Hawaii, and parts of the Pacific. Present throughout tropical Asia from Pakistan to Japan.

The most abundant wild bird on Earth and the most destructive avian pest to agriculture in sub-Saharan Africa. Breeding colonies can contain 10 million individuals and foraging flocks strip grain fields completely. Annual crop losses across Africa are estimated at USD $50 million.

📍 Sub-Saharan Africa from Senegal to Ethiopia and south to South Africa. Highest densities in Sahel belt (Senegal, Mali, Niger, Chad, Sudan) and East Africa.

The primary vector of dengue fever, yellow fever, Zika virus, and chikungunya — four of the world's most significant vector-borne diseases. It is a uniquely human-associated mosquito that breeds almost exclusively in artificial containers near human habitations and bites almost exclusively in the daytime.

📍 Tropical and subtropical regions globally. Highest dengue burden in Southeast Asia, South Asia, Latin America. Present throughout sub-Saharan Africa. Expanding range with climate change.

One of the world's most feared stored grain pests, the Khapra Beetle is a major quarantine organism in many countries. Larvae can survive for years without food in dormancy (diapause), making eradication extremely difficult once established. Native to South Asia and the Middle East, it causes severe losses in grain storage facilities.

📍 Native to India and Pakistan. Established in Middle East, North Africa, East Africa, Mediterranean Europe. Quarantine pest in USA, Canada, Australia, and UK.

One of Africa's most formidable insects, driver ants form army columns of 20–50 million workers that can overwhelm and kill any animal unable to escape. A medical and agricultural pest, they devastate beehives, poultry, livestock, and occasionally threaten immobile people and animals. They also provide a temporary cleaning service by consuming all organic pests in their path.

📍 Central and West Africa: Democratic Republic of Congo, Nigeria, Cameroon, Uganda, Tanzania, Gabon.

The most important pest of cotton worldwide in the Old World, the Pink Bollworm is the primary reason for insecticide use in cotton-growing countries across South Asia, the Middle East, and Africa. Larvae bore into cotton bolls and feed on seeds, destroying both lint quality and seed yield.

📍 Worldwide in cotton-growing regions. Major pest in India, Pakistan, Egypt, Sudan, Iran, Turkey, and sub-Saharan Africa.

A highly destructive structural and crop termite across humid tropical Southeast Asia and South Asia. Unlike subterranean species, it forages in open columns above ground and attacks living trees, rubber plantations, and timber structures. Considered a primary pest of rubber and oil palm.

📍 Malaysia, Indonesia, Singapore, Thailand, Philippines, India (South and Northeast), Sri Lanka, Bangladesh.

A tiny but catastrophically damaging pest of cotton, vegetables, and ornamentals across tropical and subtropical regions. Known primarily for vectoring over 200 plant viruses, most notably the begomoviruses (Tomato Yellow Leaf Curl Virus) that destroy entire tomato crops. One of the top 10 agricultural pests globally.

📍 Worldwide in tropical and subtropical regions. Major pest in Middle East (Israel, Jordan, Egypt, Turkey), South Asia (India, Pakistan), East Africa, and Mediterranean agriculture.

An invasive South American leafminer that arrived in Spain in 2006 and within 6 years had spread across the entire Mediterranean, North Africa, sub-Saharan Africa, and South Asia. Now considered the most devastating pest of tomato globally after it established in Africa, causing losses of 80–100% in unprotected crops.

📍 Native to South America. Invasive in Mediterranean (since 2006), entire Africa, Middle East, South Asia (India 2014), parts of China.

A significant cotton pest throughout the Middle East, North Africa, and South Asia, the Spiny Bollworm attacks cotton shoots, flowers, and bolls. It is particularly important in the Nile Valley and Egyptian cotton production, where it is considered a primary pest alongside the related Egyptian Bollworm.

📍 Egypt, Sudan, Libya, Israel, Jordan, Syria, Iraq, Iran, Saudi Arabia, Pakistan, India.

The most destructive disease of citrus worldwide, Huanglongbing (HLB, literally 'Yellow Dragon Disease') is caused by a bacterium vectored by the Asian Citrus Psyllid. It has devastated citrus industries across Asia and Africa and is under active quarantine in other regions. There is no cure — infected trees must be destroyed.

📍 Endemic across Southeast and East Asia: China, India, Philippines, Indonesia, Vietnam. Present throughout sub-Saharan Africa. Introduced to Brazil (2004) and USA/Florida (2005).

The most destructive pest of date palms and coconut palms worldwide, causing catastrophic losses to palm plantations across the Middle East, North Africa, and South Asia. Larvae bore deep into the palm crown, killing the tree from within.

📍 Native to South and Southeast Asia. Invasive throughout the Middle East, North Africa, Mediterranean Europe, and parts of East Africa.

The German cockroach is one of the most pervasive and resilient household pests worldwide. Despite its name, recent genetic research indicates it originated in Southeast Asia and spread globally through human migration and trade routes over the last 2,000 years. It is a highly successful urban dweller, thriving in close proximity to human activity where it can easily access food, water, and shelter. These insects are notorious for their rapid reproductive rates and ability to develop resistance to common insecticides. They are considered a significant public health concern because they can carry various pathogens, contaminate food surfaces, and produce allergens that trigger asthma and other respiratory issues, particularly in children and sensitive individuals.

📍 Cosmopolitan; found on all continents except Antarctica and on many major islands.

Common garden insect whose nymphs are visible as frothy white spittle masses on plants. Vector of Xylella fastidiosa bacteria in Europe.

📍 Throughout Europe and North America. Major concern in Italy for olive tree Xylella outbreaks.

Devastating water mold disease killing millions of oaks and tanoaks in California and Oregon. Major threat to European forests.

📍 California and Oregon coast. Europe in several countries. Threat to eastern US oaks.

Soil-borne fungal pathogen with many strains each specializing on different host plants. Causes damping-off, crown rot, and vascular wilt.

📍 Worldwide in all agricultural soils.

Ubiquitous gray mold affecting virtually all plants. Most important disease of strawberries and grapes globally. Thrives in cool damp conditions.

📍 Worldwide wherever plants are grown in cool damp conditions.

Soil-borne pathogen causing grotesque root galls in brassica crops. Long-lived spores persist decades in soil.

📍 Worldwide wherever brassicas are grown in cool temperate regions.

Soft-bodied sap-sucking insects that are among the most damaging pests of garden and agricultural crops globally.

📍 Worldwide. Over 4,000 species, different species on different host plants.

Soil-borne fungal disease causing wilt and death of hundreds of plant species. Persists in soil for many years.

📍 Worldwide in agricultural and garden soils.

Tiny parasitoid wasp used globally for biological control of greenhouse whitefly. One of the most commercially important biological control agents.

📍 Originally Mediterranean. Now distributed worldwide for biological control use.

Primary pest of grapes in eastern North America. Larvae infest grape berries causing rot and economic loss.

📍 Eastern North America. Where grapes are grown west to Great Plains.

Major pest of onions, garlic, and many other vegetables. Also a significant vector of tomato spotted wilt virus.

📍 Worldwide on onion family crops.

A rare pest that is actually a species of ladybug turned herbivore. Damages bean plants by skeletonizing leaves.

📍 Throughout eastern North America, especially southeastern US. Spreading with bean production.

Important native bees and critical pollinators for many wildflowers and crops. Some species in serious decline.

📍 Throughout North America. Multiple species with different ranges and habitats.

Adaptable canid rapidly expanding into urban and suburban areas. Primary threat to small pets and outdoor poultry.

📍 Historically western North America. Now found throughout North America including cities.

Tiny immobile insects that attach to plant stems and leaves, sucking sap beneath a protective waxy covering. Major pests of ornamentals and fruit trees.

📍 Worldwide. Different species on different hosts globally.

Highly intelligent and adaptable urban mammal. Raids garbage, damages property, and is a primary rabies and distemper vector.

📍 Throughout North America. Introduced and expanding in Europe and Japan.

Adaptable canid that has become a pest in urban and suburban areas where it preys on poultry, small pets, and wildlife.

📍 Native to most of Northern Hemisphere. Introduced to Australia and South America where invasive.

Green beetle with black spots that attacks cucurbits and other vegetables. Larvae are corn rootworms. Vectors bacterial wilt.

📍 Throughout North America east of Rocky Mountains.

Native North American stink bug that feeds on many plants and invades homes in fall. Less invasive than brown marmorated but common nuisance.

📍 Throughout North America. Native species.

Tiny jumping beetles that make small round holes in vegetable leaves. Most damaging to young seedlings. Huge family with different host specialists.

📍 Worldwide. Different species on different host plants globally.

The larval stage of green lacewings. Ferocious predators of aphids and other soft-bodied pests. Sometimes sold for biocontrol.

📍 Worldwide. Multiple lacewing species on all continents.

Invasive sparrow introduced from Europe. Aggressively competes with native cavity-nesting birds, killing eggs and nestlings.

📍 Native Europe and Asia. Introduced to North America 1851. Now worldwide.

North American gray squirrel that is highly invasive in UK and Europe, devastating native red squirrel populations and causing forest damage.

📍 Native North America. Invasive UK, Ireland, Italy, northern Spain, expanding.

Common native squirrel that invades attics, bird feeders, and gardens. In UK and Italy it is invasive, outcompeting native red squirrels.

📍 Native to eastern North America. Invasive in UK, Ireland, Italy displacing native red squirrel.

Large burrowing rodent that causes significant damage to gardens and farm infrastructure through eating and excavation.

📍 Eastern North America from Alaska to Alabama.

Iconic fuzzy caterpillar often found crossing roads in fall. Causes minor garden damage. Adults are Isabella tiger moths.

📍 Throughout North America.

Larvae are remarkable decomposers used commercially for composting food waste and producing animal feed. Adults do not feed.

📍 Worldwide in warm climates.

Larvae of crane flies that live in turf soil and eat grass roots. Cause dead patches in lawns, especially wet areas.

📍 Europe and North America. Major pest in UK and Pacific Northwest of North America.

Caterpillar that creates large silken webs over branch ends of many trees in late summer. Alarming in appearance but rarely seriously damages healthy trees.

📍 Throughout North America. Introduced to Europe and Asia where also becomes a pest.

Early spring caterpillar that builds silken tent nests in tree crotches. Population cycles of outbreak and collapse. Rarely kills trees.

📍 Throughout eastern North America. Related species across continent.

Rapidly expanding invasive dove from Asia. Outcompetes native doves and pigeons. Spread across North America since 1980s.

📍 Native Asia. Spread across Europe, introduced to Bahamas 1970s, Florida 1980s, now throughout North America.

Large green aphid that is one of the most studied insects scientifically. Devastating to peas, beans, and other legumes.

📍 Worldwide on legume crops.

Larvae of small flies that mine tunnels between leaf surfaces, creating distinctive serpentine trails. Primarily aesthetic damage.

📍 Worldwide in temperate and subtropical regions. Multiple species on different hosts.

Caterpillar of the cabbage white butterfly. One of the most common garden pests of brassica crops worldwide.

📍 Introduced worldwide from Europe. Now ubiquitous on every continent with cabbage growing.

Caterpillar that encases itself in a bag of silk and plant material. Defoliates and can kill evergreen trees and shrubs.

📍 Eastern North America.

The most economically important corn pest in the United States. Costs over $1 billion annually in losses and control.

📍 Throughout North American corn belt. Introduced to Europe 1990s where spreading.

Microscopic egg-parasitoid wasps. Lay their eggs inside pest insect eggs, preventing hatching. Widely used in commercial biocontrol.

📍 Worldwide. Over 200 species on every continent except Antarctica.

Tiny slender insects that rasp plant surfaces to feed. Major pests of flowers, fruits, and vegetables, also transmitting viruses.

📍 Worldwide. Major global pest in agriculture and horticulture.

Small beetles that bore beneath tree bark to breed. Native species are natural parts of forest ecology but invasive species and population explosions during drought kill healthy trees.

📍 Worldwide in forests. Mountain pine beetle (western North America), southern pine beetle (southeastern US) are major species.

Distinctive beetles that produce cantharidin, a chemical causing blisters on contact with skin. Can be toxic to horses if present in hay.

📍 Throughout North America. Most diverse in arid southwestern US.

Devastating bacterial disease of apples, pears, and related plants. Can kill entire trees rapidly with no cure.

📍 Worldwide in temperate regions wherever pome fruits (apples, pears) are grown.

Yellow and black striped beetle that is among the most damaging pests of cucumbers, squash, and melons. Primary vector of bacterial wilt disease.

📍 Eastern North America west to Great Plains.

Soft, waxy-covered insects that are major pests of houseplants and greenhouses. Cover plants in white cottony masses.

📍 Worldwide. Major problem wherever plants are grown indoors or in tropical climates.

Jumping plant lice that feed on phloem of many plants. Some species are devastating agricultural pests that transmit destructive diseases.

📍 Worldwide. Asian citrus psyllid (Diaphorina citri) invasive in Americas is most important.

Highly invasive planthopper from Asia, threatening agriculture and forests across the eastern United States.

📍 Native to Asia. Invasive in eastern United States since 2014. Spreading rapidly.

Microscopic roundworms that attack plant roots causing characteristic galls. One of the most economically important crop pests worldwide.

📍 Worldwide in all agricultural soils. Worst in tropical and subtropical regions.

Infamous disease that caused the Irish Potato Famine. Continues to devastate potato and tomato crops worldwide.

📍 Worldwide wherever potatoes and tomatoes are grown in cool wet climates.

Large family of beetles with extremely long antennae. Some invasive species are devastating tree killers.

📍 Worldwide. Most species native, several invasive species causing severe damage.

Catastrophic invasive beetle from Asia. Has killed hundreds of millions of ash trees in North America since 2002.

📍 Native to Asia. Invasive throughout eastern North America. Spreading west.

Tiny white flying insects that are serious pests of greenhouses and warm-season gardens. Transmit plant viruses.

📍 Worldwide. Originally tropical but now global pest in greenhouses and warm regions.

Large family of parasitoid wasps. Critical natural regulators of caterpillar and other insect pest populations.

📍 Worldwide. Over 100,000 species - the largest animal family on Earth.

Hoverfly that mimics bumblebees. Larvae destroy bulbs of narcissus, tulips, and other spring-flowering bulbs.

📍 Europe and western North America. Significant pest of commercial bulb production.

Common North American tick that transmits Rocky Mountain Spotted Fever and tularemia. Important vector in eastern US.

📍 Eastern North America west to the Rockies. Pacific states (limited range).

Predatory bugs that ambush and kill garden pests. Important natural control agents despite ability to bite if handled.

📍 Worldwide. Over 7,000 species.

Invasive moth from Europe that defoliates fruit trees and forest trees in the northeastern United States.

📍 Native Europe. Invasive in maritime northwest and northeast North America.

Multi-legged decomposers that break down dead plant material into soil nutrients. Occasionally enter homes in large numbers.

📍 Worldwide. Multiple species on all continents except Antarctica.

The most economically important disease of stone fruits worldwide. Can destroy entire cherry, peach, plum, and nectarine crops.

📍 Worldwide in temperate climates wherever stone fruits are grown.

White grubs that are major pests of turf grass. Adults are chafer beetles that do minimal damage themselves.

📍 Throughout North America. Multiple species with different ranges.

Crustaceans (not insects) that are primarily decomposers. Occasionally damage seedlings and strawberries. Mostly a nuisance.

📍 Worldwide wherever moist conditions exist. Originally European, now cosmopolitan.

Extremely invasive bird introduced to North America in 1890. Competes with native birds and causes significant agricultural damage.

📍 Native to Europe and Asia. Introduced to North America 1890. Now 200 million+ in North America.

Primary vector of Lyme disease in eastern North America. Also transmits anaplasmosis, babesiosis, and other diseases.

📍 Throughout eastern North America from Florida to southern Canada. Expanding range northward.

Delicate green insect with large, lacy wings. One of the most effective natural predators of garden pests. Larvae are voracious hunters.

📍 Worldwide. Multiple species on every continent except Antarctica.

Invasive beetle from Japan devastating to gardens and landscapes. Both adults and larvae cause serious damage.

📍 Native to Japan. Invasive throughout eastern North America, spreading west. Also in Italy.

Highly destructive migratory caterpillar pest that attacks grasses and many crops. Moves in large numbers consuming everything in path.

📍 Native to Americas. Spread to Africa in 2016 where devastates crops. Now global threat.

Devastating pest of squash and zucchini. Larvae bore inside vines causing sudden plant collapse.

📍 Eastern North America, east of Rocky Mountains.

Primary pest of asparagus. Both adults and larvae damage spears and fern foliage.

📍 Across North America and Europe wherever asparagus is grown.

Colorful stink bug that is the most important pest of brassica crops in the southern United States.

📍 Southern United States north to mid-Atlantic and midwest.

Large caterpillar closely related to tomato hornworm. Damages tomatoes, tobacco, and solanaceous crops.

📍 Throughout North America, primarily south and southeast United States.

Iconic migratory butterfly. Important pollinator and conservation symbol. Population in serious decline.

📍 Breeds across North America. Overwinters in central Mexico and coastal California.

Tiny but devastating plant pest. Feeds on hundreds of plant species and develops resistance to pesticides rapidly.

📍 Worldwide. One of the most cosmopolitan pest species.

Small mouse-like rodents that cause serious damage to lawns, gardens, and orchards through underground tunneling and bark girdling.

📍 Throughout North America, Europe, Asia in temperate and boreal regions.

Tiny flies that breed in moist potting soil. Larvae damage plant roots; adults are nuisance. Major greenhouse pest.

📍 Worldwide wherever potted plants are grown.

Large native bird that has become a major nuisance pest in urban and suburban areas due to non-migratory resident populations.

📍 Native to North America. Introduced to United Kingdom and other countries.

Invasive stink bug from Asia. A nuisance indoors and serious agricultural pest. Damages over 100 crops.

📍 Native to Asia. Invasive throughout United States and Europe since late 1990s.

Large family of predatory beetles that live in soil and leaf litter. Important biological control agents for many soil pests.

📍 Worldwide. Over 40,000 species.

Beautiful native butterfly associated with hackberry trees. Important pollinator and part of healthy ecosystems.

📍 Central and eastern North America wherever hackberry trees are native.

The world's most important pollinator. Essential for agriculture and natural ecosystems. Lives in large colonies.

📍 Native to Europe, Africa, Middle East. Now worldwide. Managed globally.

One of the most common fungal plant diseases. Appears as white powdery coating on leaves. Affects hundreds of plant species.

📍 Worldwide. One of the most universal plant diseases.

Flightless weevil that attacks a wide range of ornamental and edible plants. Both adults and larvae cause damage.

📍 Europe and North America. Major greenhouse and ornamental pest globally.

Well-known mammal that grubs lawns for food and uses powerful spray for defense. Primary carrier of rabies in some regions.

📍 Throughout North America from southern Canada to northern Mexico.

Ubiquitous urban pest bird. Droppings damage buildings and spread disease. Descendant of domesticated rock doves.

📍 Originally Europe and Asia. Now worldwide in cities on every inhabited continent.

A common caterpillar pest that loops its body as it moves. Severely damages brassica crops and many garden vegetables.

📍 Worldwide except polar regions. Major pest in North America, Europe, Asia, Africa.