In India, the discovery of the tick-borne viral disease, i.e. Kyasanur
Forest Disease (KFD) in 1957 marked a milestone in the history of tic
k studies. There were only 50 species recorded before the discovery of
KFD. The present record is 106 species accommodated in 12 genera of t
wo families, i.e. ixodidae and Argasidae. This number is more than one
-eighth of a total of approximately 820 tick species known from all ov
er the world, included in 19 genera and 3 families.