Figure 1. Areas in Shizuoka, Nagano, and Yamanashi Prefectures of Japan where Ixodes persulcatus and I. ovatus ticks were collected in 2003 and 2004. Closed circles indicate collection sites. Numbers of ticks collected at each site are shown in parentheses. UG, Utsukushigahara; TK, Takabachi; MZ, Mizugazuka; TN, Tennyosan; UM, Utsukushinomori.