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40 Insect Trivia Questions That’ll Make You Feel Things Crawling on Your Skin

By
Laura Schneider
Close-up of a water bug resting on a palm leaf, highlighting natural textures.

A cockroach can live for a week without its head. People love knowing that. What they don’t love hearing is why it dies at all: it can’t drink water without a mouth, so it dies of thirst. That little detail changes the whole fact from gross novelty to something almost sad. That’s the kind of insect trivia I live for. Not the stuff that makes people squirm, but the stuff that makes them go quiet for a second before someone at the next table says “wait, really?”

The person searching for insect trivia already knows a monarch butterfly migrates. They probably know a flea can jump a hundred times its body length. They’re past the basics. What they don’t realize is how many of those basics they’ve got slightly wrong, and how much weirder the truth is than whatever they memorized from a nature documentary in 2009. These forty questions are built for that person. Some will feel easy. Some will start arguments. A few might genuinely change how you think about the most successful animals on the planet.

 

The ones that feel like warm-ups (they’re not all warm-ups)

1. How many legs does an insect have?

I open with this at live events and someone always shouts “eight” before catching themselves. It’s a good litmus test for who’s been paying attention to the word “insect” versus “bug.”

Show Answer
Six. Arachnids have eight. The six-leg thing is literally the defining feature of the class Insecta, and yet about one in ten people in any room will hesitate. Common wrong answer: eight, because people mentally file spiders and insects together.

 

2. What is the most species-rich order of insects on Earth?

J.B.S. Haldane supposedly said God has “an inordinate fondness for beetles.” Whether he actually said it is debated. Whether it’s true isn’t.

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Beetles (order Coleoptera). There are roughly 400,000 described species, making up about 25% of all known animal species. Common wrong answer: ants or butterflies, because they’re more visible in daily life.

 

3. What body part do insects use to taste food , their mouths, their antennae, or their feet?

This one gets a physical reaction. People look at their own shoes after hearing the answer.

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Their feet (in many species, especially butterflies and flies). Chemoreceptors on their tarsi allow them to taste what they land on. Some also use antennae, but feet is the answer that surprises people.

 

4. What common name is given to the larval stage of a butterfly or moth?

Free point. But it sets up harder questions about metamorphosis later, and I like giving a room momentum.

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Caterpillar.

 

5. True or false: all mosquitoes bite humans.

The confident “true” from across the room is always loud. The correction is always quiet.

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False. Only female mosquitoes bite. They need blood protein for egg development. Males feed on nectar. This is one of those facts people have heard before but somehow never internalized.

 

 

Where confidence starts to wobble

6. What insect is responsible for pollinating roughly 80% of all flowering plants?

Everyone says bees. And they’re right. But I’ve watched entire tables argue about whether it should be “honeybees specifically” or “bees in general.” The answer is broader than most people think.

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Bees (as a group, not just honeybees). Wild bees, bumblebees, and solitary bees do enormous amounts of pollination work. Honeybees get the press, but they’re just one genus.

 

7. How many times per second can a housefly beat its wings , roughly 20, 200, or 2,000?

The middle option is correct and it still sounds absurd when you say it out loud.

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Approximately 200 times per second. That frequency is what creates the buzzing sound. A mosquito’s even faster, around 600.

 

8. What process do insects like grasshoppers undergo instead of complete metamorphosis?

This separates the people who took entomology from the people who watched a lot of nature shows. Both groups think they know it.

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Incomplete metamorphosis (also called hemimetabolism). The young, called nymphs, resemble small adults and grow through a series of molts rather than going through a pupal stage.

 

9. What is the only insect that produces food eaten by humans?

I’ve had someone argue “silkworm” because you can eat them. But the question says “produces food,” and that distinction matters.

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The honeybee (producing honey). While some cultures eat insects directly, the honeybee is the only one that manufactures a food product consumed widely by humans.

 

10. A ladybug is not actually a bug. What type of insect is it?

This one always gets a pause. People know ladybugs. They’ve never stopped to think about what they actually are.

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A beetle. Ladybugs (or ladybirds) belong to the family Coccinellidae within the order Coleoptera. “True bugs” belong to the order Hemiptera.

 

11. What color is an insect’s blood?

Red feels so obvious that people second-guess themselves. Good. They should.

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Usually yellowish or greenish, sometimes clear. Insect “blood” is called hemolymph, and it doesn’t carry oxygen using hemoglobin, so it’s not red. Common wrong answer: red, because that’s what we see when we swat them , but that red is often the blood of their last meal.

 

12. What insect can carry up to 50 times its own body weight?

The ant answer comes fast. And it’s correct. But I always add the context because the number alone doesn’t hit the way it should.

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The ant. Some species can carry even more. Scaled up to human size, that’s like carrying a car over your head. Leafcutter ants are particularly impressive, hauling leaf fragments that dwarf them.

 

 

The ones that start arguments

13. Is a spider an insect?

I include this not because it’s hard but because someone in every group will die on this hill. They’ll say “technically” and then trail off.

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No. Spiders are arachnids, not insects. They have eight legs, two body segments, and no antennae. Insects have six legs, three body segments, and antennae.

 

14. What insect has the shortest adult lifespan , sometimes living less than 24 hours?

The name gives it away if you think about it. But people still guess fruit fly or mosquito first.

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The mayfly. Some species live only a few hours as adults, just long enough to mate and lay eggs. Their entire adult existence is a single desperate evening.

 

15. What type of insect is a “drone”?

In 2024, half the room thinks you’re talking about technology. The other half remembers their beekeeping uncle.

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A male honeybee. Drones exist solely to mate with the queen. After mating, they die. Those that don’t mate are expelled from the hive before winter. The word “drone” for unmanned aircraft actually comes from this insect.

 

16. How many eyes does a typical housefly have?

The trick here is that people know about compound eyes but don’t know about the other ones.

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Five. Two large compound eyes and three small simple eyes (ocelli) on the top of the head. Most people say two, because they’re thinking only of the big obvious ones.

 

17. What insect’s migration covers up to 3,000 miles, from Canada to central Mexico?

Everyone knows this one. I include it because it’s one of those facts that gets more impressive the more you think about it, not less.

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The monarch butterfly. No single butterfly makes the full round trip. It takes multiple generations, yet they navigate to the same trees their great-great-grandparents used. Nobody fully understands how.

 

18. What insect was sacred in ancient Egypt?

This is a great pub question because even people who’ve never studied Egypt can picture the answer if they think about jewelry and tomb art.

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The scarab beetle (dung beetle). Egyptians associated the beetle’s habit of rolling dung balls with the god Khepri rolling the sun across the sky. It appeared on amulets, seals, and funerary art for thousands of years.

 

19. What percentage of all known animal species are insects , roughly 20%, 50%, or 80%?

People consistently lowball this. The actual number makes you rethink what “animal” means.

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Roughly 80%. There are about one million described insect species, out of approximately 1.2 million described animal species total. And entomologists believe millions more remain undescribed. Common wrong answer: 50%, because 80% feels like it can’t possibly be right.

 

20. What insect produces silk?

Spiders produce silk too, but they’re not insects. I’ve watched someone talk themselves out of the right answer because of this.

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The silkworm (larva of the silk moth, Bombyx mori). Silk production, or sericulture, originated in China around 3500 BCE. A single cocoon can yield up to 900 meters of silk thread.

 

 

The middle stretch, where the real sorting happens

21. What is the loudest insect in the world relative to its body size?

If you’ve ever been outside in the American South in summer, you already know this answer in your bones, even if your brain hasn’t caught up.

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The cicada. Some species produce sounds exceeding 120 decibels at close range, comparable to a rock concert. They generate sound using tymbals, ribbed membranes on their abdomen.

 

22. What do fireflies use their light for?

“To see in the dark” is the wrong answer that makes the most intuitive sense. The truth is more romantic.

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Primarily to attract mates. Each species has a unique flash pattern. Some species also use bioluminescence as a warning signal to predators, indicating they taste bad.

 

23. What insect can survive being frozen solid and then thawed?

This one makes people lean in. It sounds like science fiction.

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The woolly bear caterpillar (larva of the Isabella tiger moth). In Arctic regions, it freezes solid during winter and thaws in spring. It can repeat this cycle for over a decade before finally pupating.

 

24. How many segments make up an insect’s body?

Head, thorax, abdomen. Three words every biology student had drilled into them. This question rewards that specific memory.

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Three: head, thorax, and abdomen.

 

25. What insect was used in medicine to clean wounds, a practice that’s been revived in modern hospitals?

The squirm factor on this one is real. People know the answer and wish they didn’t.

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Maggots (fly larvae). Maggot debridement therapy uses sterilized green bottle fly larvae to eat dead tissue while leaving healthy tissue intact. The FDA approved medical maggots in 2004.

 

26. What is the term for the hard outer shell of an insect?

A vocabulary question that separates people who read about insects from people who just look at them.

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Exoskeleton. Made primarily of chitin, it provides structural support and protection. Insects must shed (molt) their exoskeleton to grow.

 

27. Which travels faster: a cockroach running or a butterfly flying?

I love this question because both answers feel plausible, and the reasoning people use to get there tells you a lot about how they think.

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A butterfly flying. Butterflies can reach speeds of about 12 mph (some species faster), while the American cockroach tops out around 3.4 mph on foot. But scaled to body size, the cockroach is relatively faster , it covers 50 body lengths per second.

 

28. What insect has a queen, workers, and soldiers, and builds mounds that can reach over 30 feet tall?

People split between ants and the correct answer. The height is the clue that should give it away.

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Termites. African termite mounds can exceed 30 feet and contain sophisticated ventilation systems. Relative to builder size, they’re the tallest structures any animal creates. Common wrong answer: ants, which build impressive colonies but not towering mounds.

 

29. What disease, transmitted by the Anopheles mosquito, kills more humans than any other insect-borne illness?

The mosquito is the deadliest animal on the planet. Not sharks. Not snakes. A mosquito. This question makes that concrete.

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Malaria. It kills over 600,000 people annually, mostly children in sub-Saharan Africa. The parasite (Plasmodium) is transmitted through the bite of infected female Anopheles mosquitoes.

 

30. What insect order includes butterflies and moths?

If you took any biology past high school, this is sitting right there. If you didn’t, the word itself has a nice clue built in.

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Lepidoptera. The name comes from Greek: “lepis” (scale) and “pteron” (wing). Their wings are covered in tiny scales that create their colors and patterns.

 

 

Where the floor drops

31. What insect can detect a single molecule of a female’s pheromone from seven miles away?

Seven miles. I’ve had people refuse to believe it until I show them the research.

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The male luna moth (and several other silk moth species). Their large feathery antennae are extraordinarily sensitive chemical detectors. They can locate a female in complete darkness from miles away using scent alone.

 

32. What common insect has existed in essentially the same form for over 300 million years?

Older than dinosaurs. Older than flowers. Older than most things people can name.

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The cockroach. Fossil cockroaches from the Carboniferous period look remarkably similar to modern species. They predate dinosaurs by about 70 million years. Common wrong answer: dragonflies, which are also ancient but have changed more.

 

33. What is the only continent with no native insect species?

People guess wrong on this more than you’d expect. Something about it feels like a trick.

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Antarctica. While a few insect species exist there (like the Antarctic midge, Belgica antarctica), it has no native flying insects. The midge, at about 6mm long, is Antarctica’s largest purely terrestrial animal.

 

34. Approximately how many individual insects are alive on Earth at any given time , 1 billion, 10 trillion, or 10 quintillion?

The correct answer is the one that sounds made up. That’s usually how it goes with insects.

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Approximately 10 quintillion (10,000,000,000,000,000,000). That’s roughly 1.4 billion insects for every human. The combined weight of all insects on Earth exceeds the combined weight of all humans.

 

35. What beetle can fire a boiling chemical spray from its abdomen at predators?

Nature’s chemical warfare engineer. The mechanism is so precise it’s been studied by rocket scientists.

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The bombardier beetle. It mixes hydroquinone and hydrogen peroxide in an internal chamber, producing an explosive exothermic reaction that shoots boiling liquid at nearly 100°C. The spray can be aimed in almost any direction.

 

36. What insect inspired the design of Velcro?

This is actually a trick question, and I love watching confident answers come in before doubt sets in.

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None. Velcro was inspired by burdock burrs (a plant), not an insect. Swiss engineer George de Mestral noticed burrs clinging to his dog’s fur in 1941. If you got tricked, you’re in good company , this misconception shows up constantly in insect trivia lists.

 

37. What do Japanese giant hornets do to honeybees that invade their territory?

The real story is what the honeybees do back. It’s one of the most metal things in all of nature.

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A single Japanese giant hornet can kill 40 European honeybees per minute. But Japanese honeybees have a defense: they swarm the hornet and vibrate their flight muscles, raising the temperature to about 47°C , just above what the hornet can survive but below what kills the bees. They cook it alive.

 

38. What insect has the largest known brain relative to its body size?

The answer to this one makes you reconsider what intelligence means.

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The ant. Some ant species have brains that make up about 15% of their body mass (compared to about 2% in humans). Despite having roughly 250,000 neurons (versus our 86 billion), ants perform complex navigation, communication, and collective decision-making.

 

39. What is the only insect known to have been domesticated by humans?

People say honeybees. They’re wrong, and the distinction is worth understanding.

Show Answer
The silkworm (Bombyx mori). After thousands of years of selective breeding, domestic silkworms can no longer survive in the wild , they can’t fly, they can’t find food, and their cocoons won’t open without human help. Honeybees are managed, not domesticated. They can and do survive without us. Common wrong answer: the honeybee, because beekeeping feels like domestication. But feral honeybee colonies thrive worldwide.

 

 

The last one

40. What percentage of insect species have scientists estimated we’ve lost in the last 30 years , and what is this decline commonly called?

I save this question for last because insect trivia shouldn’t just be a party trick. The answer to this one sits differently than the others. It’s not fun. It’s not designed to make you feel clever. It’s designed to make you remember that every weird, disgusting, beautiful fact in this list describes something that is disappearing. Some studies suggest we’ve lost over 40% of insect species populations in three decades. Scientists call it the “insect apocalypse.” A world without insects isn’t a world with fewer annoying flies. It’s a world without pollination, without decomposition, without the base of most terrestrial food chains. Every question in this list is about something worth keeping.

Show Answer
Studies estimate a decline of roughly 40% or more of insect populations, and it’s commonly referred to as the “insect apocalypse” or “insect Armageddon.” The primary drivers are habitat loss, pesticide use, climate change, and light pollution.

 

Laura Schneider

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