- About 1/8 to 1/4 inch long; brown to dark brown with light stripe down center; wings have dark brown scales.
- Often found near shallow temporary pools; larvae live in quiet bodies of water, ranging from fluid-filled leaves to stagnant pond-sand lakes. Prefer to live in damp, warm areas; can be found outdoors in grass or leaves, and in areas where molds grow.
- Males drink plant juices; females feed on blood of mammals, including humans.
- Eggs are dropped in temporary pools; larvae feed, pupate and emerge over an extended period.
- Population increases after summer rains; males do not bite.