Edmonton's summer holiday from mosquitoes is officially over.
Trap counts rose dramatically this week after one of wettest Julys in years.
City light traps snared an average of 145 mosquitos this week compared to last week's tally of 30.
"Definitely a big increase in our total mosquito population for this last week than we have seen so far this year," said city biologist Mike Jenkins.
Still, the newly arrived wave of mosquitoes is only half as many as found in traps last year at the same time and a long ways from the 700 counted in 2004.
The population is largely the usual summer species, which are more active at dawn and dusk, said Jenkins.
The city is monitoring populations in Hawrelak Park where Heritage Days takes place this weekend and Gallagher Park where the Edmonton Folk Music Festival will be held the following weekend, said Jenkins.
The city will decide whether it will take measures to control the pests closer to the events themselves, he said.