The female leaves mature larvae in dry soil. The larvae then pupate, and undergo further maturation and development. When they become adults they attach to a host and begin to blood-feed. Forest flies remain on their hosts for long periods of time. | The female leaves mature larvae in dry soil. The larvae then pupate, and undergo further maturation and development. When they become adults they attach to a host and begin to blood-feed. Forest flies remain on their hosts for long periods of time. |