The genus Haematomyzus includes three species of lice that differ so markedly from all other lice that they have been placed in a suborder of their own. These unusual lice are ectoparasites of elephants and warthogs. Their mouthparts are elongated to form a drill-like structure that allows them to penetrate the thick skin of their host.
The first spelling of "Rhyncophthirina" by Ferris was a lapse, and in subsequent use of the term he spelled it "Rhynchophthirina" adding the second "h". Ordinal names are not covered by the International Code of Nomenclature and thus the name and spelling comes down to a matter of personal preference. The majority of phthirapterists spell the suborder as "Rhynchophthirina" as did Hopkins and Clay, 1952,[full citation needed] and Price et al., 2003.[full citation needed]