Did you know giant dragonfly-like insects lived around 300 million years ago, and some were among the largest insects ever known? Dragonflies are amazing flying insects that belong to the order Odonata and the suborder Anisoptera.
Dragonflies live all over the world except Antarctica. They are closely related to damselflies, and people sometimes confuse the two. Kids love dragonflies because many species have bright colours, shiny bodies, and transparent wings that sparkle in the sunlight.
Keep reading to learn more about dragonflies, how long they have lived on Earth, and what makes them so special.
Quick Snapshot: Kid-Friendly Fact Box
| Feature | Fact |
|---|---|
| Animal Group | Insect |
| Order | Odonata |
| Suborder | Anisoptera |
| Where They Live | Every continent except Antarctica |
| Habitat | Ponds, lakes, rivers, marshes, and wetlands |
| Wings | Two pairs of wings, or four wings total |
| Eyes | Two large compound eyes and three simple eyes |
| Diet | Mostly insects as adults |
| Young Stage | Aquatic nymph or naiad |
| Special Skill | Hovering, fast flying, and flying backward |
What Dragonflies Look Like
Dragonflies are beautiful insects with long bodies, large eyes, and two pairs of transparent wings. Their wings are thin but strong, helping them fly with amazing control.
Many dragonflies have bright colours such as blue, green, red, yellow, brown, or black. Some species even have a metallic shine that makes them look like tiny flying jewels.
Dragonflies have six legs like other insects. However, they are not very good at walking. Their legs are mainly useful for grabbing prey and perching on plants, rocks, or branches.
Dragonfly Eyes and Vision
Dragonflies have some of the most impressive eyes in the insect world. They have two huge compound eyes and three simple eyes called ocelli.
Some dragonflies may have up to about 24,000 tiny lenses, called ommatidia, in their compound eyes. These eyes give dragonflies a very wide field of vision, helping them spot prey, avoid predators, and move quickly through the air.
Dragonflies can also detect movement extremely well. This is one reason they are such successful hunters. Some dragonflies can see ultraviolet light and polarized light, which humans cannot see.
Dragonfly Habitats Around the World
Dragonflies live on every continent except Antarctica. They are usually found near freshwater because their young live underwater.
Common dragonfly habitats include:
- Ponds
- Lakes
- Rivers
- Streams
- Marshes
- Wetlands
Dragonflies often fly around sunny areas near water. They use plants, reeds, rocks, and branches for resting, hiding, and hunting.
Most dragonfly species live in warmer parts of the world, especially tropical regions. Some species also migrate. For example, the Common Green Darner, Anax junius, can move long distances across North America.
The Dragonfly Life Cycle
The life cycle of a dragonfly begins when eggs are laid in or near water. After hatching, the young dragonfly lives underwater as a nymph, also called a naiad.
Dragonfly nymphs look very different from adult dragonflies. They have six legs, strong jaws, and small wing pads that later develop into wings.
Dragonflies spend much of their lives in this underwater stage. Depending on the species, the nymph stage may last for a few months or even several years.
When the nymph is ready to become an adult, it climbs out of the water onto a plant, rock, or other surface. Its skin splits open, and the adult dragonfly slowly emerges. After its wings dry and harden, it can fly.
How Dragonflies Fly
Dragonflies are fantastic fliers. They have two pairs of wings, which means four wings in total. Each wing can move independently, giving dragonflies incredible control in the air.
Dragonflies can:
- Fly forward
- Fly backward
- Hover in one place
- Turn quickly
- Dive after prey
- Change direction suddenly
Some dragonflies can fly up to about 30 miles per hour, making them one of the fastest flying insects. Their flying skills help them catch prey and escape predators.
What Dragonflies Eat
Adult dragonflies are insect-eating predators. They mostly eat flying insects such as:
- Mosquitoes
- Flies
- Gnats
- Midges
- Small moths
- Other small flying insects
Dragonflies often catch their prey in mid-air. Their wide field of vision and fast flying skills make them excellent hunters.
Dragonfly nymphs are also predators, but they live underwater. They may eat mosquito larvae, aquatic insects, worms, tadpoles, and sometimes even small fish.
Dragonflies help control mosquito populations, although they do not remove all mosquitoes from an area. They are part of a healthy food chain.
Dragonflies vs Damselflies
Dragonflies and damselflies are related, but they are not the same. Once you know what to look for, they are easy to tell apart.
| Feature | Dragonfly | Damselfly |
|---|---|---|
| Body Shape | Thicker and stronger-looking | Slimmer and more delicate |
| Wings at Rest | Usually held open to the sides | Usually folded together over the body |
| Eyes | Large eyes that often touch or nearly touch | Eyes are separated with a gap |
| Flight | Fast and powerful | Slower and lighter |
Dragonflies are usually bigger, stronger fliers than damselflies.
Dragonfly Colours and Patterns
Dragonflies come in many colours, including:
- Bright blue
- Green
- Red
- Yellow
- Brown
- Black
- Metallic colours
Their colours can help them attract mates, identify their species, and manage body temperature. Darker colours may absorb more heat, while lighter colours may reflect more sunlight.
Some dragonflies also change colour as they age or as the temperature changes.
Dragonfly Migration
Some dragonfly species migrate from one place to another. Large groups of dragonflies may be seen moving in late summer or early autumn.
Dragonflies migrate to find better weather, more food, and suitable freshwater places to lay eggs. In some species, migration may take more than one generation to complete.
One famous migratory dragonfly is the globe skimmer dragonfly. It is known for making one of the longest insect migrations in the world, crossing huge distances and even oceans.
Dragonflies and Their Predators
Dragonflies are fierce hunters, but they also have predators. Animals that may eat dragonflies include:
- Birds
- Frogs
- Fish
- Spiders
- Larger insects
Dragonfly nymphs can also be eaten by fish, frogs, and other aquatic animals.
Dragonflies escape danger by flying quickly, changing direction suddenly, and using their wide vision to spot threats.
Why Dragonflies Are Important
Dragonflies are important for several reasons.
First, they help control populations of mosquitoes, gnats, and other small insects. This makes them useful predators in many habitats.
Second, dragonflies are part of the food chain. They eat smaller insects and are eaten by birds, frogs, fish, and other animals.
Third, dragonflies can help scientists understand freshwater habitats. Because their young depend on water, dragonflies and damselflies can be useful indicators of freshwater ecosystem health.
If a wetland has many healthy dragonfly species, it may be a sign that the habitat is in good condition.
Fossil Dragonflies
Dragonfly-like insects have existed for about 300 million years. Some prehistoric relatives were much larger than modern dragonflies.
One famous giant insect was Meganeura, a dragonfly-like insect with a wingspan much larger than today’s dragonflies. Scientists believe ancient insects may have grown so large partly because Earth’s atmosphere once had more oxygen than it does today.
Modern dragonflies are much smaller, but they still look like creatures from another time.
Dragonflies in Culture
Dragonflies have appeared in art, stories, and symbols in many cultures. In many places, dragonflies are seen as symbols of transformation, change, and renewal.
This makes sense because dragonflies begin life underwater as nymphs and later transform into flying adults.
In Japan, dragonflies are often connected with courage, strength, and good fortune. They also appear in traditional art, clothing, and decoration.
In some European myths, people once said dragonflies could sew your ears shut while you slept. Of course, this is only a myth. Dragonflies are not dangerous to humans. They do not sting, and they rarely bite unless handled roughly.
Fun Dragonfly Facts
- Dragonflies live near water because their young grow underwater.
- Dragonflies are found on every continent except Antarctica.
- Dragonflies have two pairs of wings, or four wings total.
- Dragonflies can hover in one place.
- Some dragonflies can fly backward.
- Some dragonflies can fly up to about 30 miles per hour.
- Dragonfly nymphs are underwater hunters.
- Adult dragonflies mostly eat flying insects.
- Dragonflies can help control mosquitoes.
- Dragonflies have two large compound eyes and three simple eyes.
- Some dragonflies can see ultraviolet light.
- Dragonfly-like insects lived around 300 million years ago.
- Some dragonfly species migrate long distances.
- The globe skimmer dragonfly can cross huge distances during migration.
- Dragonflies do not sting people.
- Dragonflies are useful indicators of freshwater habitat health.
How Kids Can Spot Dragonflies
Children can often spot dragonflies during warm, sunny months, especially near freshwater.
Good places to look include:
- Ponds
- Lakes
- Rivers
- Streams
- Wetlands
- Marshes
To watch dragonflies safely, stand quietly near the water and look for bright colours and shiny transparent wings. Binoculars can help you see them without disturbing them.
Never try to catch or harm dragonflies. They are best watched flying freely.
Frequently Asked Questions About Dragonflies
Are dragonflies and damselflies the same?
No. Dragonflies and damselflies are related, but they are not the same. Dragonflies are usually stronger, faster fliers, while damselflies are usually slimmer and more delicate.
Are dragonflies found all around the world?
Dragonflies are found on every continent except Antarctica, where the climate is too cold for them.
What is the scientific name of dragonflies?
Dragonflies belong to the suborder Anisoptera. They are part of the order Odonata, which also includes damselflies.
Do dragonflies bite?
Dragonflies do not sting. They may bite if someone handles them roughly, but they are not dangerous to humans.
What do dragonflies eat?
Adult dragonflies mostly eat flying insects such as mosquitoes, flies, gnats, and midges. Dragonfly nymphs eat small aquatic animals.
Conclusion
Dragonflies are wonderful predatory insects that have lived on Earth for millions of years. Their ancient relatives flew through the skies around 300 million years ago, and modern dragonflies are still some of the most skilled fliers in nature.
They help control small insect populations, support the food chain, and show us how important freshwater habitats are. Some dragonfly and damselfly species are now threatened because wetlands are disappearing, so protecting ponds, rivers, and marshes helps protect these amazing insects too.
Dragonflies may be small, but they play an important role in nature.
External Links
- Australian Museum – Dragonflies and Damselflies
- Smithsonian Magazine – 14 Fun Facts About Dragonflies
- Smithsonian Gardens – Dragonflies
- IUCN – Dragonflies Threatened as Wetlands Disappear
- National Geographic – Ancient Giant Insects
- Britannica – Dragonfly