Medium size mosquito
Proboscis: long, dark.
Palpi: about as long as the proboscis, dark with raised scales on basal part.
Head: Occiput clothed with numerous dark, erect, forked scales. Those on median area and vertex pale.
Thorax: Integument of scutum brown to black; scutum clothed with numerous pale-yellow to golden-brown hairs. scutellum crescent-shaped, clothe with yellow hairs and long dark setae.
Abdomen: Integument of abdomen dark brown to black densely clothed with yellowish-brown hairs.
Legs: dark scaled; femora and tibiae tipped with pale scales.
Wings: length about 4.5 mm. narrow, dark scales; four distinct spots.
Halter: knob, dark-scaled.
Bionomics: Larvae are found in permanent fresh water in slow streams, canals, ponds, and lakes containing surface growing or emergent vegetation…only occasionally in temporary pools…larvae feed on small organisms at the water surface. (flagellates, diatoms and green algae = plankton) During Summer months the larval period is about 12 to 20 days…the pupal period varies 2 to 6 days…can have 7 to 10 generations in one season. The females feed on man and animals…they feed during the night and rest during the day…they rest in buildings, underneath houses, stables, hollow trees, and other shelters…they are active for a short period after dusk and just before dawn. They overwinter as inseminated females in hibernation…female lays 9 to 12 batches of eggs during her lifetime, and each batch is 194 to 263 eggs. The flight range is one mile or less under normal conditions. This species is regarded as the most important vector of malaria in the southern region of U.S.