Polyplax spinulosa
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Psocodea
Family:	Polyplacidae
Genus:	Polyplax
Species:	P. spinulosa
Binomial name
Polyplax spinulosa (Burmeister, 1839)
Synonyms[1]
Pediculus spinulosus Burmeister, 1839 Haematopinus spinulosus: Denny, 1842 Pediculus denticulatus Nitzsch, 1864 Haematopinus (Polyplax) spinulosus: Neumann, 1909 Polyplax campylopteri Zavaleta, 1945

Polyplax spinulosa is a sucking louse (Anoplura) from the genus Polyplax. It occurs worldwide and commonly infects its type host, the brown rat (Rattus norvegicus), and related species like the black rat (Rattus rattus), Rattus pyctoris, Rattus nitidus, Rattus argentiventer, Rattus tanezumi, Rattus exulans, and Bandicota indica.^[2] It is also occasionally found in other rodents, such as the marsh rice rat (Oryzomys palustris) in North America.^[3]

• Durden, L.A. 1988. The spiny rat louse, Polyplax spinulosa, as a parasite of the rice rat, Oryzomys palustris, in North America (subscription required). The Journal of Parasitology 74(5):900–901.
• Durden, L.A. and Musser, G.G. 1994. The sucking lice (Insecta, Anoplura) of the world: a taxonomic checklist with records of mammalian hosts and geographical distributions. Bulletin of the American Museum of Natural History 218:1–90.