Pest Guides

Culex Mosquito

Culex tritaeniorhynchus


Culex Mosquito

  • The adult’s thorax, legs and veins on the wings are always covered with brown scales. The Culex mosquito is dull in colour, and the tip of the abdomen is always blunt.
  • Larvae rest 45 degrees from the surface of the water.
  • Eggs are brown, long and cylindrical. These eggs rest vertically on water surface and are cemented in a raft of 300 eggs. Rafts are usually 3 – 4mm in length and 2 – 3mm width.


  • It takes 6 – 10 days for the egg to develop into the adult stage.
  • Complete metamorphosis consists of the egg, larval, pupa and adult lifecycle stages.


  • Habitat: the Culex mosquito mainly breeds in paddy fields, polluted stagnant water and drains.
  • Mosquito bites: these mosquitoes bite at night and usually rest indoors before and after the blood meal. Sometimes they may rest outdoors.
  • Culex mosquitoes prefer darker colours to lighter colours.
  • These species of mosquitoes are long distance fliers.
  • Culex mosquitoes are main vectors for Japanese B – Encephalitis.

Read our tips on how to get rid of mosquitoes on your premises or contact the Rentokil Pest control specialists for an expert mosquito control solution.