The adult stage of Haemaphysalis leporis-palustris was studied. Two
infestations consisted of male and female ticks on two rabbits (Oryctolagus
cuniculus). Other two infestations consisted of only female ticks on two O.
cuniculus. Females fed without males showed differences in some biological
parameters when compared to females fed with males. Parthenogenesis is
reported for the first time by one H. leporis-palustris female.