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Culex tritaeniorhynchus


  • Adult – thorax, legs and veins on the wings are always covered with brown scales. Dull in colour. The tip of the abdomen is always blunt.
  • Larval rest 45 degree from the surface of the water
  • Egg is brown, long and cylindrical, vertical on water surface, cemented in a raft of 300 eggs. Raft usually 1/8" long and 1/16" – 1/8" wide.


  • Egg to adult stage takes 6 – 10 days
  • Complete metamorphosis – egg, larval, pupa and adult


  • Habitat – mainly breed in paddy field, polluted stagnant water and drains.
  • Biting rhythm – bite at night and usually rest indoor before and after the blood meal. Sometimes they may rest outdoor.
  • Prefer darker colours
  • Long distance fliers
  • Main vector for Japanese B – Encephalitis

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