title: The genus Ixodes in the United States: a scanning electron microscope study and key to the adults.
mesh_terms: D000818:Animals; D001096:Arachnid Vectors / Q000648:ultrastructure*; D005260:Female; D008297:Male; D008855:Microscopy, Electron, Scanning; D013987:Ticks / Q000648:ultrastructure*; D014481:United States