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Ixodes ricinus
This is a male Ixodes ricinus tick (smaller) shown copulating with a female tick (larger).
I. ricinus, the “castor bean” tick, so called because of its resemblance to the castor bean, is a vector for the B. burgdorferi spirochete, the cause of Lyme disease, and is commonly found on farm animals, and deer who are the natural host.
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This image comes from the US federal government's Centers for Disease Control PHIL (Public health image library), with identification number: #3809
Note that this work may have been originally produced outside of the US government.
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