The Leonard Lopate Show Published by The Leonard Lopate Show How to Prevent, and Treat, Lyme Disease Listen 31 min A male Ixodes ricinus tick (smaller) shown copulating with a female tick (larger). I. ricinus, the "castor bean" tick, is a vector for the B. burgdorferi spirochete, the cause of Lyme disease. ( Centers for Disease Control and Prevention's Public Health Image Library (PHIL) #3809) / Wikimedia Commons ) i Post a Comment