''Haematopinus oliveri'', known commonly as the pygmy hog-sucking louse, is a critically endangered species of insect in the suborder

Anoplura Sucking lice (Anoplura, formerly known as Siphunculata) have around 500 species and represent the smaller of the two traditional superfamily (taxonomy), superfamilies of lice. As opposed to the paraphyletic chewing lice, which are now divided amo ...

, the sucking lice. It is an

ectoparasite Parasitism is a close relationship between species, where one organism, the parasite, lives on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life. The entomologist E. O. Wilson has ...

found only on another critically endangered species, the

pygmy hog The pygmy hog (''Porcula salvania'') is the rarest species of pig in the world today, and is the only species in the genus ''Porcula''. It is also the smallest species of pig in the world, with its piglets being small enough to fit in one's pock ...

(''Porcula salvania''). It is endemic to India and can now only be found in parts of north-western Assam.Critically Endangered Animal Species of India. http://www.moef.nic.in/downloads/public-information/critically_endangered_booklet.pdf

References

* Endemic fauna of India Lice Insects described in 1978 Taxonomy articles created by Polbot {{louse-stub