Handbook of medical entomology . is a distinct variety, if not species,of the human itch mite, is the cause of so-called Norwegian disease is very contagious, and is much more resistant than theordinary scabies. Unlike the latter, it may occur on the face andscalp. Sarcoptes scahiei not only attacks man but also occurs on a largenumber of mammals. Many species, based on choice of host, andminute differences in size and secondary characters, have beenestablished, but most students of the subject relegate these tovarietal rank. Many of them readily attack man, but they havebecome suffi
Handbook of medical entomology . is a distinct variety, if not species,of the human itch mite, is the cause of so-called Norwegian disease is very contagious, and is much more resistant than theordinary scabies. Unlike the latter, it may occur on the face andscalp. Sarcoptes scahiei not only attacks man but also occurs on a largenumber of mammals. Many species, based on choice of host, andminute differences in size and secondary characters, have beenestablished, but most students of the subject relegate these tovarietal rank. Many of them readily attack man, but they havebecome sufficiently adapted to their normal host so that they areusually less persistent on man. 78 Parasitic Arthropods Notoedres cati (usually known as Sarcoptes minor) is a speciesof itch mites which produce an often fatal disease of cats. The bodyis rounded and it is considerably smaller than Sarcoptes scabiei,the female (fig. 6i) measuring 2I5-230[jl long and 165-i75[x wide;the males i45-i50[jl by 120-125^. The most important character.
Size: 1572px × 1590px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectp, bookyear1915
