Culex pipiens Adult (image) University of California - Santa Cruz Share Print E-Mail Caption Culex pipiens, the northern house mosquito, is the most common mosquito in urban and suburban areas in North America. Mosquito populations have increased as much as ten-fold over the past five decades in New York, New Jersey, and California. Credit Ary Faraji Usage Restrictions For use only with news coverage of this research Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.