The day-biting mosquito that can carry chikungunya, dengue and valley fevers has been found in northwest Fresno, the city’s mosquito control manager said Friday.

It’s the first time the Aedes aegypti mosquito has been found in that part of the city. The mosquito traps were near Herndon and Shaw avenues, said Tim Phillips of the Fresno Mosquito & Vector Control District.

The mosquito was first found in Clovis and Madera in 2013 and since then had been captured in southeast Fresno, Exeter and Arvin in Kern County.

Phillips said calls from people about day-biting mosquitoes led to the northwest Fresno capture in traps. “Any call about a day-biting mosquito, we’re going to look at it closer,” he said.

Fresno County’s health officer warned residents in June to be on alert to mosquito bites after the first case of chikungunya virus was diagnosed in a women who was bitten by a mosquito while on vacation in another country.

So far, no local transmission of chikungunya, yellow fever and dengue viruses have occurred, but health officials are concerned that someone traveling outside the Valley could become infected, return home and be bitten by a mosquito, which then could infect others. The tropical diseases transmitted by the A. aegypti mosquito have symptoms that include fever, severe headaches and body aches.

Valley doctors need to inquire about recent travel history for patients who have flu-like symptoms and severe joint pain, health officials said. Mexico, for example, is seeing widespread cases of chikungunya virus.

Besides the concern of the day-biting mosquito that can carry tropical viruses, a dawn- and dusk-biting mosquito in the Valley can transmit West Nile virus, which can cause mild flu-like symptoms to severe neurological disease. Last year, 29 Californians died of neurological complications from West Nile virus and 798 were infected. The Valley had no deaths, but 53 people in Fresno County were infected and 21 were infected in Tulare County. Kings County had five infections and Madera County had one.

Phillips said water sources in backyards should be eliminated to prevent the breeding of mosquitoes. The A. aegypti can breed in very small amounts of water, he said.

“In order to control this mosquito, we have to have the public’s cooperation,” he said.