Response of Iowa mosquito populations to unusual precipitation patterns as measured by New Jersey light trap collections.

New Jersey light trap data from 1993, a year with unusually high amounts of precipitation, and 1994 were compared with mean light trap counts for the previous 8-10 years in each of 6 locations. The study took place in Iowa. In 1993, Aedes trivittatus and Culex tarsalis populations were unchanged. A nopheles punctipennis and Culex pipiens complex populations were significantly higher, and Aedes vexans populations increased in all 6 sites, significantly so in 2 sites. Species composition was unchanged. In 1994, populations of each of these species were not significantly different from the long-term means. Aedes vexans populations were above average in all sites and populations of the remaining species were below average.