Sunday, July 25, 2021


February mosquito questions

The Colusa Mosquito Abatement District has received some questions as to why some mosquitoes are out on these warm winter days.

“The mosquito, Anopheles freeborni, a spring and fall mosquito, over winters as an adult mosquito,” said Colusa Mosquito Abatement District Manager, Dave Whitesell. “After hibernation for several months, the mosquitoes obviously become very hungry and, therefore, emerge for short periods of time to feed and take a blood meal.”

Whitesell said the Anopheles freeborni usually come out when the temperature reaches about 60-65 degrees Fahrenheit. 

“These types of mosquitoes do not multiply this time of year,” he said. “Instead, they feed and return to their hibernation shelters.”

“They are also not common carries of any of the Encephalitis’s or West Nile Virus,” Whitesell added. 

Due to the short activity time of this mosquito, weather conditions, and accessibility to the target, Whitesell said that the conditions hindered at this time of the year.

In the late summer and fall months this mosquito will be controlled with the District wide spray program.

“At his time people are recommended to protect themselves using appropriate repellents, wearing long sleeve shirt’s and pants during dawn and dusk periods. ■

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