Skip directly to search Skip directly to A to Z list Skip directly to navigation Skip directly to page options Skip directly to site content


Description:This 2008 photograph depicts a dorsal view of a female yellow dog tick, Amblyomma aureolatum, which is a vector of Rocky Mountain spotted fever (RMSF) in the country of Brazil.

Note that the back of this tick is only partially covered by her hard, scutum, or “shield”, which allows her abdomen to expand to many times the size seen here. Compare this feature with that of the male counterpart of this Ixodidae hard tick, PHIL 11070, and observe how the male's scutum covers his entire dorsal abdomen.
Rocky Mountain spotted fever (RMSF) is the most severe tick-borne rickettsial illness in the United States. This disease is caused by infection with the bacterial organism Rickettsia rickettsii.

High Resolution: Click here for hi-resolution image (36.11 MB)
Content Providers(s):CDC/ Dr. Christopher Paddock
Creation Date:2008
Photo Credit:James Gathany
Links:CDC – Div. of Viral and Rickettsial Diseases, Nat. Cntr. for Zoonotic, Vector-Borne, and Enteric Diseases; Tickborne Rickettsial Diseases; Rocky Mountain spotted fever
CDC Organization
Skip Navigation Links.

Skip Navigation Links.
Copyright Restrictions:None - This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image.