Phthirus


Also found in: Dictionary, Thesaurus, Wikipedia.

Phthirus

 [thir´us]
a genus of lice. P. pu´bis is the pubic or crab louse, a species that infests human pubic hair and sometimes other hairy areas; see also pediculosis pubis.
Phthirus pu´bis the pubic louse or crab louse, a species that infests the pubic hair and sometimes other hairy areas of the body of humans. See also pediculosis pubis.

Pthirus

(thī'rŭs), Avoid the misspellings Phthirus and Phthirius.
A genus of lice (family Pediculidae) formerly grouped in the genus Pediculus. The main species is Pthirus pubis (formerly Pediculus pubis), the crab or pubic louse, a parasite that infests the pubes and neighboring hairy parts of the body.
[irreg. fr. G. phtheir, louse]
References in periodicals archive ?
In contemporary taxonomy, the louse that infects humans is called pediculus humanus and the crab louse is the phthirus pubis.
Mycoplasma hominis Ureaplasma urealyticum Chancroid Haemophilus ducreyi> >Chlamydial infections Chlamydia trachomatis Cytomegalovirus infections Cytomegalovirus Genital herpes Herpes simplex virus Genital (venereal) warts Human papillomavirus Gonorrhea Neisseria gonorrhoeae Granuloma inguinale Calymmatobacterium granulomatis (donovanosis) Leukemia-Lymphoma/Myelopathy HTLV-I and II Lymphogranuloma venereum Chlamydia trachomatis Molluscum contagiosum Molluscum contagiosum virus Pubic lice Phthirus pubis Scabies Sarcoptes scabiei Syphilis Treponema pallidum Trichomoniasis Trichomonas vaginalis Vaginal yeast infections Candida albicans
Organisms Commonly Transmitted by the Sexual Route Bacteria * Chlamydia trachomatis * Neisseria gonorrhoeae * Treponema pallidum * Haemophilus ducreyi * Calymmatobactenum granulomatosis * Mycoplasma hominis * Mycoplasma genitalum * Ureaplasma urealyticum Viruses * Human immunodeficiency virus * Herpes simplex virus types I and II * Human papilloma viruses * Hepatitis B virus * Hepatitis C virus * Molluscum contagiousum Virus Protozoa * Trichomonas vaginalis Ectoparasites * Sarcoptes scabiei * Phthirus pubis
Body lice (Pediculus humanus corporis) and public lice (Phthirus pubis) are pesky parasites closely related to the head louse.
Three types of lice infest humans: the head louse (Pediculus humanus capitis), the body louse (Pediculus humanus corporis), and the pubic louse (Phthirus pubis).