Sarcoptes scabiei and Demodex phylloides. Life Cycle of Hog Lice Hog lice are bloodsucking parasites that feed exclusively on swine. They can survive for 2 to 3 days off the pig in warm bedding, but they will not generally live on other animals. The adult live span is about 35 days. An adult female will lay 3 or 4 eggs daily for approximately 25 days.
Nymphs are similar in structure but smaller than the adult.
They nymphs will go through three development stages before reaching adulthood. Lice infestations start around the ear, expand to the lower body, and then to soft-skinned abdominal areas. Lice do not burrow into the skin at any stage of their life cycle. In more extensive infestations, the pests can be seen as dark bluish-black discolorations on the skin. The continuous sucking of blood and lymph causes irritation to the skin, leading to some itching.