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Odonata

Common name:

Dragonflies and damselflies

Distribution:

Every continent except Antarctica

Habitat:

Freshwater habitat (for larvae)

Diet:

Insects

Number of species globally

5900

Number of species in Hong Kong :

142

Morphology
(how to recognize them) :

-Large compound eyes
-Two pairs of long, transparent wings with veins
-Long slender abdomen
-Three ocelli (simple eye)
-Short antennae

Diagram

Did you know ?

To mate, the male holds the females’ head with the end of his abdomen. The female bends her abdomen forward so that her own genitalia touches the males’ genitalia which holds the sperm, forming a "wheel" position.

Gallery

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