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CO2 Trapping for May 2018
Average adult mosquitoes collected per trap per night

This table and graphs show the average number of mosquitoes collected per CO2 trap per night during the month of May compared to the five-year average for the six most common mosquito species in San Mateo County. All species increased in abundance during May, except Aedes washinoi, which typically peaks in March and April. The number of collected Culex pipiens, the most abundant summer mosquito, is below average. This is likely a result of pro-active seasonal catch basin control, utilizing mapping software in the field for more effective treatments. Aedes sierrensis and Culex erythrothorax were collected in monthly monitoring traps for the first time this year during the month of May.

Species

May 2018

5-year May average

Cx. pipiens

5.95

10.44

Cs. incidens

1.36

1.42

Ae. washinoi

0.1

0.78

Cx. tarsalis

0.1

0.74

Cx. erythrothorax

1.17

1.99

Ae. sierrensis

1.33

1.13

 

Commands