Adults of Psorophora cyanescens are medium sized with much of the body clad in purple scales. The scotum is black with gold and greenish-gold scales and the legs are entirely purple. Females feed mainly on large mammals, such as livestock, deer and humans, biting mostly at night. It is not known for transmitting human pathogens. Larvae are mostly found in sunny grassland depressions and ditches.
References: Burkett-Cadena, N.D. 2013. Mosquitoes of the Southeastern United States. Tuscaloosa, Alabama: The University of Alabama Press. pp. 165-166