black-legged tick(n = noun.animal) ixodes scapularis - 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);
is a kind of hard tick, ixodid
is a member of genus ixodes, ixodes

american dog tick, deer tick, hard tick, horse tick, indian tick fever, sheep tick, soft tick, tick, tick fever, tick off, tick over, tick trefoil, water tick, western black-legged tick, wood tick