BREEDING HABITAT: Clear, running water (e.g. spring runoff).
BITING TIME: Daytime only. Peaks in mid-morning, then again as dusk approaches. Intensifies at onset of storms, may go all day when overcast.
TARGET AREAS: Edges of tightly fitting clothing, head just beneath hatband.
ATTRACTED TO: Dark colors: blue, purple, brown, and black. Well-tucked dark pants may lure them away from your head area.
LESS ATTRACTED TO: Pale or light colors.
TEMPERATURE RANGE: Generally inactive below 50°F.
LITTLE-KNOWN FACTS: If one is trapped in an enclosure, all its attention turns to escape instead of attack; it will spend the rest of its life crawling on the screen or windowpane.
OTHER FACTS: Even common horse and house flies can transmit serious diseases, such as anthrax, tuberculosis, tularemia, tetanus, typhoid, dysentery, and cholera.