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desert bugs - Top That! Publishing

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What is the difference between a dragonfly and a damselfly<br />

Damselflies also belong to the group Odonata, and<br />

can easily be mistaken for dragonflies unless you know<br />

what to look for. Both dragonflies and damselflies have<br />

four wings, but a dragonfly’s hind wings are usually<br />

shorter and broader than its front wings. A damselfly’s<br />

wings are equal in size and shape. Dragonflies are<br />

usually larger than damselflies, and when a dragonfly<br />

is at rest, it holds its wings out from its body, whereas a<br />

damselfly folds its wings along the length of its body.<br />

Although both are often found near water, dragonflies<br />

venture further afield.<br />

Why do dragonflies have big eyes<br />

Like many insects, a dragonfly’s eyes take up most of its<br />

head, giving it a 360-degree field of vision. Each<br />

human eye has just one lens, but a dragonfly has many<br />

thousands of lenses in each eye (called compound<br />

eyes). This means it can see in front, above, below and<br />

behind – perfect for detecting the slightest movement,<br />

whether to catch prey or escape from danger.<br />

A dragonfly has 360-degree all-round vision.<br />

14<br />

A damselfly folds its wings along the length of its body<br />

(left), whereas a dragonfly’s are held away.<br />

Why do dragonflies live by water<br />

Dragonflies are often seen near water because this is<br />

where the female lays her eggs. When the eggs hatch,<br />

the larvae (called nymphs) live beneath the water,<br />

breathing through gills and feeding on tadpoles and<br />

small fish. Dragonflies stay in this laval state for up to<br />

five years. When they are ready to become adults,<br />

they climb up a reed or piece of plant matter, where<br />

their old laval skin splits overnight and a beautiful<br />

dragonfly emerges in the warmth of the morning sun.<br />

Is a dragonfly a type of fly<br />

While it’s true that both dragonflies and flies are<br />

insects, flies have just two wings, whereas dragonfiles<br />

have four. So, a dragonfly is not a type of fly. As a<br />

general rule, most insects have four wings; flies are<br />

the exception.

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