The San Gabriel Valley Mosquito and Vector Control District warned residents to be on the lookout for Asian tiger mosquitoes.
The pest control agency says Asian tiger mosquitoes -- their proper name is Aedes albopictus and they can be identified by white-and-black bodies -- transmits human pathogens, such as malaria, St. Louis encephalitis, West Nile virus, dengue fever and Western Equine encephalomyelitis. One was found in El Monte in September.
Mosquitoes also can carry the agent that causes the often fatal heartworm in cats and dogs.
Unlike most mosquitoes, which typically feed only at dusk and dawn, Asian tiger mosquitos feed during the daytime.
Vector Control officials warned that people may unwittingly spread mosquito larvae or eggs when they move or share plants and plant clipping that have been rooted in water.
Officials were urging area residents to:
- Allow Vector Control employees access to property to treat standing water and to kill live bugs.
- Eliminate all standing water sources from your yard, including saucers or dishes under potted plants, buckets, cans and used tires.
- Drill holes in tire swings, trash cans or other items that may catch and hold water.
- Keep water in ponds and fountains circulating.
- Add free mosquito-eating fish, available from Vector Control, to bodies of water that cannot be drained.
- Store recyclables that may attract bugs in a garage or covered carport.
- Search for any trash or tarps that might collect water from lawn sprinklers.
- Clean rain gutters of leaves and debris so water can flow freely.
- Report any sightings of mosquitoes with black-and-white markings.
Residents who suspect an Asian tiger a mosquito infestation on their property were urged to call the West Covina office of the Vector Control District at (626) 814-9466.