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香港生物多樣性博物館
HONG KONG BIODIVERSITY MUSEUM
研究 • 教育 • 保存 Research • Education • Preservation
Distribution:
Every continent except Antarctica
Habitat:
Freshwater habitats such as acidic bogs, ponds, lakes, and rivers
Diet:
Small crustacean, water fleas (nymph); flying insects (adult)
Number of species globally
2,942
Number of species in Hong Kong :
42
Morphology
(how to recognize them) :
-Smaller slimmer bodies than dragonflies
-Compound eyes widely separated
-Similar forewings and hindwings
-Wings folded close to the body when resting
Diagram
Did you know ?
They are sexually dimorphic, so males are often more brightly colored. Nymphs moult repeatedly and during their last molt, they climb out of the water to undergo metamorphosis: their skin splits down their back, wings emerge and their abdomen is inflated to reach their adult form.
Gallery
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