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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 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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