Female Tick (IMAGE)

Penn State

Female Tick

Caption

A "questing" female Ixodes scapularis (blacklegged tick) reaches out in hopes of climbing aboard a host. Researchers say the blacklegged tick, the primary vector of Lyme disease, was almost nonexistent in Pennsylvania in the 1960s but now is the state's dominant tick species.

Credit

Joyce Sakamoto/Penn State

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