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| a tick that feeds on dusky-footed wood rat and bites humans; a tick that feeds on dusky-footed wood rat and bites humans; principal vector for Lyme disease in western United States especially northern California ❲Ixodes pacificus❳ | ||||
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| parasitic on mice of genus Peromyscus and bites humans; principal vector for Lyme disease in eastern United States (especially New England); parasitic on mice of genus Peromyscus and bites humans; principal vector for Lyme disease in eastern United States (especially New England); northern form was for a time known as Ixodes dammini (deer tick) ❲Ixodes scapularis❳ |