Culex (Cux.) ocossa


  • Dyar and Knab
  • 1919:6 (M)
  • Georgetown, British Guiana (USNM)



Argentina, Brazil, Colombia, Ecuador, Guyana, Panama, Peru, Suriname, Venezuela


  • None


Immatures have been found in permanent habitats including lakes, rivers and swamp margins in a forest, gardens and the sides of roads usually with abundant floating vegetation (Pistia, Eichhornia, Salvinia, Azolla). Adults are nocturnal and feed on humans. (Sallum & Forattini 1996).

Medical Importance

Reported as a vector of western equine encephalitis (WEE) and could be a very important vector of Venezuelan equine encephalitis (VEE) (Sallum & Forattini 1996).


Adult Stage, detail images:

Click on image to open larger view in a separate window. Higher-resolution detail images of some specimens are available on request.

Adult Stage, illustrations:

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