ABSTRACT
Medical entomology is the science about the arthropods, that is, insects, arachnids, and related evertebrates, which cause human disease. It is a very vast and important biomedical discipline encompassing subjects such as entomology, ecology, epidemiology, infectious disease control, and environmental science including the science about the conservation of nature and natural resources. In the following brief account, I will focus on the main features concerning the biology and medical importance of the taxa (taxonomic groups) of parasitic arthropods which are of outstanding significance to human health in the northern parts of the Holarctic (Palaearctic and Nearctic) zoogeographical region.
