Table 1.

Geographic origin and developmental stages of 1,667I. ricinus ticks

Region (no. of ticks)No. of:
Nymphs (n = 575)Adult males (n = 448)Adult females (n = 644)
Uster (225)658575
Wangen (952)357202393
Thur (93)184134
Rheinau (232)1325149
Rüdlingen (165)36993