Booklice hatch from eggs in about 2-4 weeks after the eggs are laid. Young will go through about 2-4 nymph stages to reach adulthood which takes another 2-3 months. Once mature, females can generate 50-100 eggs during her life and as an adult she would expect to live 1-4 months. Booklice are able to adapt to their environment, i.e., the more moisture and the more moderate the temperatures (50 -80 degrees) the more they will reproduce and live. Cold weather (below 35 degrees) will kill off adults but eggs will live ready to hatch as soon as local temperatures get back to where they are comfortable.