Inland floodwater mosquitoes are poised the thrive in the wake of heavy rainfall or flooding, according to P.J. Liesch, director of the UW-Madison Insect Diagnostic Lab.
“Then the larvae have to feed and grow and develop, which takes a bit of time,” Liesch said, “so that’s why when we have a heavy rainfall event, it’s often 10 to 14-ish days later, and boom, the mosquitoes are out in full force.”