Difficult-to-repel
Guides
Psorophora columbiae
dark ricefield mosquito, glades mosquito
Psorophora columbiae is a large, aggressive mosquito species native to North America, commonly known as the dark ricefield mosquito or glades mosquito. It is notorious for its capacity for massive population explosions following hurricane and flooding events, which have resulted in documented livestock fatalities through exsanguination. The species is a significant pest of mammals, including cattle, horses, sheep, and deer, and is considered difficult to repel with standard insect repellents.