Bugs of Cosmopolitan
Found everywhere — usually because they hitched a ride.
94 on file
Common Bed Bug
Survives a year without feeding. Has been with humans for 3,500 years. Wants nothing to do with you — except your blood.
Bombardier Beetle
Sprays boiling caustic chemicals from a rotating turret. 500 pulses per second.
Buff-Tailed Bumblebee
Flies in cold honey bees can't. Vibrates flowers at 400 Hz to shake out pollen. Pollinates your tomatoes.
Globe Skimmer Dragonfly
Longest insect migration on Earth (18,000 km). 95% kill rate. 360-degree vision.
Western Honey Bee
Pollinates a third of your food. Dances in code. Vote on where to live by quorum.
Regal Jumping Spider
Recognizes human faces. Plans ambush routes. Probably dreams.
Seven-Spotted Ladybug
Eats 5,000 aphids a lifetime. Bleeds yellow. Universally considered good luck.
Yellow Fever Mosquito
Deadliest animal in human history. Has killed more people than every war combined.
European Praying Mantis
Rotates her head 180°. Sees you in 3D. Sometimes decapitates her partner.
Silkworm Moth
Domesticated 5,000 years ago. Built the Silk Road. Adults can no longer fly.
Australian Tiger Beetle
Fastest insect on Earth. Runs so fast her eyes can't keep up.
Antlion
Larva digs a sand pit. Hides under it. Ant slides in. Jaws close. Adult is a delicate dragonfly. Unrelated to ants.
Jewel Cuckoo Wasp
Living jewel — iridescent blue, green, gold. Sneaks into other wasps' nests. Curls into a ball when caught.
Common Fruit Fly
The most-studied animal in scientific history. Six Nobel Prizes ride on her shoulders.
Marmalade Hover Fly
Looks like a wasp. Can't sting. Pollinates your garden. Larvae eat aphids by the thousand.
Green Lacewing
Larva eats 600 aphids. Mother lays eggs on stilts to keep siblings from eating each other. Sold by the kilo.
Common Mayfly
Adult life: 24 hours. Sometimes 5 minutes. The order's name means 'short-lived wing.'
Common Pillbug
Not a bug. A land crustacean. Closer to a lobster than to anything in your garden.
Velvet Ant ('Cow Killer')
Not an ant. Wingless wasp. Sting painful enough to be called 'cow killer.' Indestructible armor.
American Cockroach
Runs 530 km/h scaled to human size. Survives a week without its head. NASA studies it.
Argentine Ant
One global super-colony. Ants from Italy and Portugal recognize each other as family.
German Cockroach
World's most damaging cockroach. Now resistant to every major pesticide class simultaneously.
Black & Yellow Mud Dauber
Builds mud nests on your wall. Stuffs each cell with paralyzed spiders. Doesn't sting people.
California Trapdoor Spider
Lives in a burrow with a hinged camouflaged door. Lived 43 years (longest spider ever).
Varroa Mite
1.6 mm parasite. Single greatest threat to global honey bees. Costs beekeepers $2B a year.
Assassin Bug
Liquefies prey from inside out. Wears disguises of dust, lint, or the corpses of past kills.
Ebony Jewelwing Damselfly
Dragonfly's slender cousin. 200 million years old. Iridescent metallic body, midnight black wings.
Giant Water Bug
Largest true bug on Earth. Eats frogs and turtles. Bite is worse than a wasp sting. Father carries the eggs.
Water Strider
Walks on water. Each leg has millions of waterproof hairs. The marine cousin lives on the open ocean.
Codling Moth
World's most damaging apple pest — the proverbial 'WORM IN THE APPLE'. $1B+ annual global losses.
Drugstore Beetle
Most polyphagous stored-product pest. Eats DRUGS — strychnine, belladonna, other plant alkaloids without harm.
Indianmeal Moth
Most damaging stored-product moth worldwide. Diagnostic SILK WEBBING in infested pantry foods.
Trichogramma Wasp
TINY parasitoid wasp (0.3 mm). BILLIONS commercially mass-reared per year for agricultural pest control.
Garden Symphylan
Tiny white 12-legged 'pseudocentipede'. Separate ancient arthropod class. Major NA vegetable seedling pest.
Striped Earwig
Largest NA earwig. Major beneficial predator of crop pests. Females provide GUARDED MATERNAL CARE.
Hide Beetle
Forensic entomology bug — arrival time on corpses estimates time-of-death. Used by museums to clean skeletons.
Cotton Aphid
Major cotton and melon pest. Attacks 700+ plant species. Foundational case study in pesticide resistance evolution.
Diamondback Moth
Most damaging cruciferous crop pest worldwide. $4-5B annual losses. FIRST documented case of insect Bt resistance.
Rice Weevil
Major stored-grain pest worldwide. Larvae develop INSIDE individual rice/wheat/corn kernels. 10-25% storage losses.
Green Peach Aphid
Most economically damaging APHID in the world. Attacks 875+ plant species. Transmits 100+ plant viruses.
Cluster Fly
Larvae burrow INTO living earthworms. Adults form thousands-strong winter aggregations in attics.
Common Flesh Fly
Doesn't lay eggs — gives birth to LIVE LARVAE directly. Beats blow flies to fresh carcasses.
Green Bottle Fly
FDA-approved for medical maggot therapy. Eats dead tissue, kills MRSA, stimulates healing.
Horse Bot Fly
Lays eggs on horse's front legs. Horse licks. Larvae develop in mouth, then attach to stomach wall for 10 months.
House Cricket
Most globally significant edible insect. Domesticated for food in 30+ countries. Chirp rate = temperature.
Dark-Winged Fungus Gnat
The houseplant pest. NZ cousin glows in caves to attract prey. Major greenhouse vector.
Mantisfly
Lacewing that evolved into a mantis. Larva hitchhikes on spiders to eat their eggs.
Asian Tiger Mosquito
Globally invasive via the used-tire trade. Vectors dengue, Zika, chikungunya into temperate climates.
Whirligig Beetle
Eyes split half-above and half-below water. Echolocates using surface ripples. Swims at 1 m/s.
Cigarette Beetle
Eats tobacco, spices, dried herbs, museum specimens. Yeast endosymbiont detoxifies the nicotine.
Blue Bottle Fly
Forensic entomology centerpiece. Larvae used as medical maggot therapy. Vomits to digest food.
Body Louse
Vector of typhus that killed 30M+. Dated origin of human clothing. Lives only in the seams of your clothes.
Crab Louse (Pubic Louse)
Crab-shaped louse. Host-jumped from gorillas to early hominins 3-4 million years ago.
Cuckoo Bee
Lays eggs in other bees' nests. Larvae kill the host larva and eat her food. 15% of all bee species do this.
Granulate Ambrosia Beetle
Insect farmer. Carries fungus in body pouches, plants it in tree tunnels, eats the harvest. 60M years old.
Oriental Rat Flea
Vector of bubonic plague. Killed 200+ MILLION humans across history. Most consequential insect ever.
Two-Spotted Spider Mite
0.5 mm. Damages 1,100+ plant species. Genome reveals extreme detox-gene arsenal — resistant to almost every miticide.
Caddisfly
Larvae build portable cases. French artist had caddisflies build cases from gold and gemstones.
Greater Wax Moth
Caterpillar DIGESTS plastic — first discovered in 2017. 40,000× faster than environmental degradation.
Firebrat
Silverfish's heat-loving cousin. Lives behind ovens at 40°C. 400 million years old.
Red Velvet Mite
Crimson velvety mite. Appears in masses after rainstorms. Predator and traditional Indian medicine.
Varied Carpet Beetle
Eats wool and fur like clothes moths. Used by museums to clean every skeleton on display.
Cat Flea
Most common flea worldwide. Jumps 100× her body length at 100g. Dominant flea on cats, dogs, humans.
Webbing Clothes Moth
Larvae digest keratin — the protein in wool, fur, silk. Adults don't eat. $1B+ in textile damage per year.
Red Flour Beetle
Most cosmopolitan stored-grain pest. Second insect ever to have her genome sequenced. Key model organism.
Yellow Fever Mosquito
Vector of yellow fever, dengue, Zika, chikungunya. Day biter. Breeds in a bottle cap of water.
Anopheles Mosquito (Malaria Vector)
Sole vector of human malaria. Kills 600,000 a year. Most deadly animal on Earth, by impact.
Black Fly (Buffalo Gnat)
Bites livestock and humans in clouds. African subgroup vectors river blindness. Public-health success story.
Fairyfly
Smallest insect on Earth. 0.139 mm. Smaller than a single Paramecium. Fully functional brain.
Common Ground Beetle
40,000 species of beneficial ground predators. Eats slugs, caterpillars, weed seeds. Iridescent.
Head Louse
Lives ONLY on human heads. Her cousin the body louse dated the invention of clothing.
Book Scorpion (Pseudoscorpion)
Tiny scorpion-cousin in your bookshelf. Eats booklice and dust mites. Hitchhikes on flies.
Cabbage White
Most agriculturally damaging butterfly on Earth. $200M+ in US damage per year. Loves cabbage.
Drone Fly
Bee-mimic hoverfly. Larva is the 'rat-tailed maggot' that breathes through a 5x body-length snorkel.
Globe Skimmer Dragonfly
Longest insect migration on Earth — 18,000 km. Crosses the Indian Ocean. Truly global panmictic species.
Horse Fly
Slices the skin with scissor-mandibles. Eyes glow rainbow-iridescent. Most painful fly bite on Earth.
House Centipede
The bathroom centipede everyone has screamed at. Eats cockroaches and bed bugs. Not actually an insect.
House Fly
Vomits on your food to dissolve it. Carries 100+ pathogens. Sees movement 10x faster than you do.
Painted Lady Butterfly
Most cosmopolitan butterfly. Multi-generational 14,000 km migration across continents. Billion-strong year.
Pea Aphid
Female gives live birth to clones already pregnant with their own clones. Photosynthesizes. Trillions of her.
Robber Fly
Aerial ambush predator. Takes bees, wasps, even hummingbirds. Paralyzes prey midair.
Meadow Spittlebug
Lives in a froth-bubble of her own waste. Adults jump at 400g — highest acceleration of any animal. Olive disease vector.
Ant-Mimicking Spider
Spider that walks, smells, and waves antennae like an ant. Some species hunt the ants she mimics.
Fig Wasp
Each fig species has ONE specific wasp. She enters, loses her wings, lays eggs, dies inside. 80 million years.
Metallic Green Sweat Bee
Iridescent metallic green. Drinks human sweat for the salt. Key model for evolution of insect society.
Booklouse (Psocid)
1 mm. Eats the mold on your books. All female. Cosmopolitan museum and library pest.
Cave Cricket (Spider Cricket)
Jumps AT you when scared because she can't see far. The basement 'spricket.' 250 million years old.
Cellar Spider
The basement 'daddy long legs.' Hunts and kills black widows. The viral venom myth is false.
House Dust Mite
0.3 mm. 10 million in your mattress. Eats your dead skin. Major asthma trigger worldwide.
Harvestman (Daddy Long-Legs)
TRUE daddy long-legs. NOT a spider. No venom. No silk. Eats solid food. 410 million years old.
Pharaoh Ant
2 mm. Invades hospitals. Spray her and she SPLITS the colony. Queens by the dozen.
Silverfish
400 million years old. Predates wings. Lives 8 years. Mates by floor-deposited sperm packet.
Spitting Spider
Spits sticky-and-venomous silk-glue at prey from 1 cm away. Fires in 1.4 milliseconds.
Springtail
100,000 per square meter of soil. Catapults itself with a spring-loaded tail. Survives -60°C.