Deer Tick adult female (aka black-legged tick, aka scienific name "Ixodes Scapulara")

classic Lyme disease "bullseye rash" (Erythema migrans)...however this does NOT occur in up to 40% of Lyme disease victims.

electron microscope view of Borrelia Burgdorferi, the spirochete (spiral shaped bacterium) that causes Lyme disease

the two-year lifecycle of the deer tick