[Distribution and some problems in the ecology of the tick, Ixodes trianguliceps Bir. in the southern Urals]

Data on the distribution and ecology of Ixodes trianguliceps in the South Urals are presented. This species occurs in various landscapes of the forest zone of the South Urals between 52 degrees 11' and 52 degrees 22' N. lat. It infects 9 species of small mammals of which species of the genus Clethrionomys were found to be the major hosts of I. trianguliceps in this area.