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January 2020 CO2 Trap Results

The following table and graph show the average number of mosquitoes collected per CO2 trap per night during the month of January compared to the five-year average for the six most common mosquito species in San Mateo County. Counts for all species are averaging below five per trap night, which is consistent with the five-year average. The numbers are expected to remain low until spring.

Species

January 2020

5-year January average

Culex pipiens

0.63

2.25

Culiseta incidens

0.12

0.22

Culex tarsalis

0.08

0.22

Aedes washinoi

0

0

Aedes sierrensis

0

0

Culex erythrothorax

0

0


Commands