H. apri typically parasitizes wild hogs whereas H. suis is more commonly associated with domestic swine. [ex. Durden, L. A., Musser, G. G. 1994. Bulletin of the American Museum of Natural History 218: 1-90]
Taxon Citation Remarks:
Citation information points to the most recent interpretation of the taxon name (not the original, which is absent from the sucking louse checklist).