The house spiders are web-spinners, and feed on small insects, spiders, silverfish and other indoor pests. Life Cycle Female harvestmen lay their eggs on the ground or in rotten wood in fall. In the spring, the tiny arachnids hatch, white and tiny copies of the adults. The young harvestmen soon darken, and as they grow through the summer, molt seven times until they reach full size. The adults then mate and lay eggs for the next year's generation.
Most species live for only one year.
Habits Harvestmen are most commonly found in late summer when they have reached adult size. They are usually found in cool sheltered areas, such as near trees or structures. They need lots of moisture to survive, drinking from puddles and other water sources. Harvestmen are generally nocturnal and solitary, although occasionally they may be found in groups with legs entwined in protected areas such as holes in trees. Harvestmen are generally leisurely in their movements, but can move rapidly when disturbed.