Ixodes scapularis is substantially less tolerant
to higher SDs than A. americanum. Its activity period thus occurs
at a time when the danger of desiccation is lowest, which at the
same time is correlated with the main activity period of one of
its main hosts, the white tailed deer, Odocoileus virginiana. The reasons
for the daytime questing of A. americanum are much less clear