Adults vary in size, depending on species, with a body length up to about 1/2 inch and a leg span up to 2 inches.
They are dark brown with one body section and long, thin legs.
Harvestmen are known as daddy long legs, and are not true spiders, but they are close relatives. They are active at night and are often found in large numbers around structures and inside buildings. Moisture is a main attraction, as they require water on a regular basis. Harvestmen do not bite or sting, do not possess venom, and do not create silk.
Harvestmen are hunters and feed on insects, aphids, caterpillars, leafhoppers, beetles, flies, mites, slugs, worms, spiders and other harvestmen.
Females lay eggs in moist soil, often under rocks or logs. They have a small needle-like appendage, called an ovipositor, to inject eggs into the soil. The eggs survive through winter to hatch in the warmth of spring. Females lay one batch of eggs each year.
Harvestmen release a foul-smelling odor as a defense against predators. They sometimes gather in large numbers on tree trunks and interlace their legs together. Harvestmen live for one year and die from the cold in winter.